Alaska Paleontological Database

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Authors:

Dover, Jim , Tailleur, Irv L. , Dumoulin, Julie A.

Editors:

Date:

/2004

Title:

Geologic and fossil locality maps of the west-central part of the Howard Pass Quadangle and part of the adjacent Misheguk Mountains Quadrangle, western Brooks Range, Alaska

MF-2413 , , 76 p., 2 sheets

Host:

U.S. Geological Survey Miscellaneous Field Studies Map:

Document Type:

Article\Abst.\Chapter\report

Annotation:

UserNote

92AD50C (32447-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 44'45" N., Long. 158 deg. 55'35" W. Possibly graded-bedded, partly silicified limestone rich in crinoid columnals. Thin section is medium- to coarse-grained, poorly sorted, diverse skeletal grainstone. Bioclasts chiefly crinoid ossicles (20-40 percent), along with lesser bryozoans, foraminifers, siliceous sponge spicules, brachiopod fragments, and ostracodes; lithoclasts include glauconite, micrite, noncalcarous (locally spiculitic) mudstone and phosphate. Collected approx. 15 m below top of approx. 50-60-m-thick section of unit Mlri. Stratigraphic up seems to be to the south, based on sedimentary structures; section could be structurally thickened. If section is depositionally continuous, 92AD52A (loc. 3) should be near botton. This is the furthest northwest exposure of unit Mlri in the Howard Pass 1:250,000 quadrangle. (description from Dover et al., 2004, p. 29 (Table 1)); [Howard Pass C-5. 68°44'47", 158°55'35". Possibly graded-bedded, partly silicified limestone rich in crinoid columnals.
Collected ~15 m below top of ~50-60 m-thick section of Ipnavik facies of Lisburne Group. Stratigraphic up seems to be to the south, based on sedimentary structures (but could be structually repeated). If section is not repeated, 92AD52A should be near top and 50C should be near bottom.
Collected at 760+ m elevation, on top of small knob, ~2 miles due west of Jubilee Creek and ~3/4 mile east of hill 815 m; center sec. 13, T. 8 S., R. 30 W.
This is the furthest northwest exposure of Ipnavik facies in the Howard Pass quadrangle. (description from Harris E&R report dated March 7, 1995, shipment A-95-3)]

1 Pa frament Bactrognathus excavatus Branson and Mehl

16 Pa elements Bispathodus stabilis (Branson and Mehl) .....

..... or Bi. utahensis Sandberg and Gutschick

1 "Hindeodella" segaformis Bischoff s.f. bar fragment

Idioprioniodus conjunctus (Gunnell), 6 Pa, 3 M, 6 Sa, and 18 Sb-Sc elements

Kladognathus sp., 3 P, 8 M, 4 Sa, and 7 Sb-Sc elements

17 Pa elements Polygnathus communis cairna Hass

2 Pa fragments Polygnathus spp. indet.

1 Pa element fragment Pseudopolygnathus pinnatus (Voges)

2 Scaliognathus praeanchoralis Lane, Sandberg, and Ziegler fragments

6 Pb elements Scaliognathus sp. indet.

48 indet. bar, blade, and platform fragments

13 Pa elements Pseudopolygnathus primus Branson and Mehl

3 incomplete Pa elements Siphonodella isosticha (Cooper)

5 Pa element fragments Siphonodella sp. indet.

8 Pa elements Gnathodus punctatus (Cooper)

Unassigned elements: 5 Pb (3 morphotypes) and 9 M (4 morphotypes)

92AD52A (32448-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 43'55" N., Long. 158 deg. 55'00" W. Very fine grained, medium- to medium-dark-gray limestone containing fine-grained skeletal pack/grainstone; bioclasts mostly (80 percent) calcareous sponge spicules (to 3 mm long). Other grains include bryozoan, brachiopod and crinoid fragments, ostracode valves, and rounded clasts of noncalcareous mudstone. Collected from approx. 10 m below rubble of mafic igneous sill, stratigraphically above(?) 92AD50C (loc. 2). (description from Dover et al., 2004, p. 30 (Table 1)); [Howard Pass C-5. 68°43'55", 158°55'00". Very fine-grained, medium- to medium dark-gray limestone with fine-grained skeletal debris.
Collected from ~ 10 m below rubble of mafic igneous sill, stratigraphically above(?) 92AD50C.
Collected at ~600 m elevation, ~1 mile south (and slightly east) of sample 92AD50C and ~1 mile due west of Jubilee Creek; NE1/4SE1/4 sec. 24, T. 8 S., R. 30 W. (description from Harris E&R report dated March 17, 1995, Shipment no. A-95-3)]

57 Pa elements Bispathodus utahensis Sandberg and Gutschick?

7 "Hindeodella" segaformis Bischoff s.f. bar fragments

Idioprioniodus conjunctus (Gunnell), 2 Pa, 6 Pb, 5 M, 2 Sa, and 8 Sb-Sc elements

Kladognathus sp., 6 P, 12 M, 6 Sa, and 20 Sb-Sc elements

20 Pa elements Polygnathus communis Branson and Mehl

1 Scaliognathus praeanchoralis Lane, Sandberg, and Ziegler? fragment

20 indet. bar, blade, and platform fragments

Siphonodella sp. indet., 4 juvenile Pa and 2 Pb elements

Unassigned elements: 6 Pb (3 morphotypes), 11 M (3 morphotypes), and 3 Sc (3 morphotypes)

92ADo274B (32466-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 39'15" N., Long. 158 deg. 46'05" W. Fine-grained, reddish-brown-weathering dolostone interbedded with approx. 50 percent medium-dark-gray, approx. 0.5 -cm-thick (or less) chert layers containing sponge spicules. Thin section is dolomite, crystal mosaic (crystals euhedral to subhedrals; 20-150 microns in diameter) with irregular zones of chert locally rich in siliceous sponge spicules. Rocks here are an unusually carbonate-rich facies of unit lPMap. Lithogically similar to 92ABs180A (loc. 10) and to thin-bedded chert/dolostone at Lisburne Ridge (northeastern Howard Pass 1:250,000 quadrangle). Interbeds of medium- to dark gray chert (92ADo274A) contained corroded fragments of sponge spicules but no identifiable radiolarians. (description from Dover et al., 2004, p. 30 (Table 1)); [Howard Pass C-5. 68°39'17", 158° 46'00". Fine-grained, reddish-brown-weathering dolostone with ~50% medium-dark-gray, ~0.5-cm-thick (or less) chert interlayers containing sponge spicules. Collected from out and adjacent rubble of Mississippian(?) new(?) facies of Lisburne Group, similar to thin-banded chert/dolostone at Lisburne Ridge. Lithology is similar to 92ABS180.
Collected on northwest side of hill 835 m, 0.5 mile south of headwaters of Recon Creek and 2 1/4 miles north of headwaters of Rolling Pin Creek; NW1/4, NE1/4 sec. 19, T. 9 S., R. 29 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

2 Pa fragments Bispathodus utahensis Sandberg and Gutschick

1 Pa element Gnathodus pseudosemiglaber Thompson and Fellows

2 Pa element fragments Gnathodus sp. indet.

1 small bar fagment "Hindeodella" segaformis Bischoff s.f.

43 indet. bar, blade, and platform fragments

82ABs180A (32467-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 37'50" N., Long. 158 deg. 52'40" W. Dark-brownish-gray to brownish-black, light-gray- to slightly brownish-weathering, mostly micritic dolostone (some skeletal supportstone with clasts of brown mudstone) and dark-gray to black chert containing locally preserved, rare to abundant crinoid fragments; chert and dolostone interlayered (50:50) in 2- to 7-cm-thick beds. Sample from rubble at very top of approx. 100-m-thick section of unusually carbonate-rich facies of unit lPMap. Rocks are similar to basal part of section at Lisburne Ridge; also resembles unit Mlri but is dolomitized and does not contain sills. Samples 92ADo274B (loc. 7) and 92ADo275 (table 2, loc. 8) are also from this facies. Chert overlying(?) this facies at this locality (92ABs180B; table 2) produced Late? Triassic radiolarians (description from Dover et al., 2008, p. 31 (Table 1))

3 Pa element fragments of Bispathodus stabilis (Branson and Mehl) .....

..... or Bispathodus utahensis Sandberg and Gutschick

51 indet. bar, blade, and platform fragments

92AD59A (32452-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35'45" N., Long. 158 deg. 27'20" W. Sample from 3- to 6-cm-thick bed of fine-grained, dark-gray, very light gray to medium-gray-weathering, very fetid limestone that has a ghostly texture of black spheroids (calcitized radiolarians?). Thin section is calcite crystal mosaic that contains relict, carbonate-replaced radiolarians. Sample taken approx. 3 m below top of approx. 30-m-thick section (poorly exposed and could be folded) mostly black chert (and (or) silicified mudstone) but including silty bands and spicules and approx. 20-30 percent limestone. Uppermost part of section is light-gray chert that contains radiolarians of Mississippian? age (92AD59G, table 2). (description from Dover et al., 2004, p. 31 (Table 1)); [Howard Pass C-5. 68°35'48", 158°27'25". 3-6 cm-thick-bedded, fine-gray, very light-gray- to medium-gray-weathering, very fetid limestone with ghostly texture of black spheroids (calcitized radiolarians?).
Collected from Mississippian "deeper-water facies" of the Lisburne, ~3 m below top of ~ 30 m(?)-thick section (poorly exposed and could be folded) comprised mostly of black chert (and/or silicified mudstone) with silty bands and spicules and ~20-30% limestone. Uppermost part of section is light-gray radiolarian chert.
Collected from NW side of small knob (~660 m+ high), ~1.5 miles SE of junction of Kiligwa River and Drenchwater Creek; NE1/4NE1/4 sec. 9, T. 10 S., R. 29 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

2 Pa element fragments Gnathodus pseudosemiglaber Thompson and Fellows?

Unassigned elements: 2 Pb (2 morphotypes), 1 digyrate Pb? of Osagean morphotype, 1 Sa, and 1 Sc

42 indet. bar, blade and platform fragments

92AD59AA (32453-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35'45" N., Lat. 158 deg. 27'20" W. Lithologically similar to 92AD59A, but a thicker bed (15-35 cm) that has obvious parallel and cross laminae on weathered surface. Thin section is calcite-replaced-radiolarian-packstone that contains lesser sponge spicules; matrix is noncalcareous mud. Collected approx. 15 m below 92AD59A. (description from Dover et al., 2004, p. 31 (Table 1)); [Howard Pass C-5. 68°35'48", 158°27'25". Similar in lithology to 92AD59A, but in a thicker bed (15-35 cm), with obvious parallel and cross laminae on weathered surface. Collected ~ 15 m below 92AD59A.
From same locality as above ("referring to 92AD59A"). (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

3 Pa elements Gnathodus texanus Roundy

23 indet. bar, blade, and platform fragments

92AD43D , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. Sample from 4-cm-thick, evenly bedded, brownish-gray, peloidal lime grainstone containing possible mud intraclasts. Thin section is peloid-skeletal grainstone with abundant calcispheres and local fenestral fabric. Collected from unnamed Devonian limestone unit (Dl), near base of approx. 20-m-thick section of carbonate mudstone overlying less resistant, approx. 4-m-thick fossiliferous interval. (description from Dover et al., 2004, p. 32 (Table 1)); [Howard Pass C-4. 68°32'52", 158°06'40". 4 cm-thick, even-bedded, brownish-gray peloidal limestone with mud intraclasts(?).
Collected from unnamed Devonian limestone (Dls) unit, near base of ~20-m-thick carbonate mudstone overlying less resistant, ~4-cm-thick fossiliferous unit.
Collected ~2.5 miles north (and slightly west) of 92AD42 (probably part of the same unit), from 40 m+ high prominent white pinnacle of carbonate mudstone, ~1.75 miles due north of Kuna River and ~5 miles west of Story Creek; center sec. 25, T. 10 S., R. 27 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

Unassigned elements: 1 Pb (Devonian and Mississippian morphotype), 1 M, 1 Sb, and 1 Sc elements

11 indet. bar, blade, and platform fragments

92AD43E (12466-SD) , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. Brownish-gray, grayish-orange-weathering, fossiliferous lime wackestone to packstone containing bryozoans and corals. Forms matrix to abundant large colonial corals of Pragian-Eifelian age (see table 3 for megafossil data). Thin section is coralline pack/wackestone that has a dolomitic matrix. Collected from unnamed Devonian limestone unit (Dl), at about middle of approx. 4-m-thick fossiliferous interval underlying carbonate mudstone. (description from Dover et al., 2004, p. 32 (Table 1)); [Howard Pass C-4. 68°32'52", 158°06'40". Brownish-gray, grayish orange-weathering, fossiliferous lime wackestone to packstone containing bryozoans and corals. Forms matrix to abundant large colonial corals (Pragian-Eifelian), reported on by Bill Oliver, E and R: A-93-6.
Collected from unnamed Devonian limestone unit (Dls) unit, at about middle of ~4 m-thick fossiliferous unit underlying carbonate mudstone.
From same locality as above ("referring to 92AD43D"). (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (shipment A-95-3)0.

3 Dvorakia sp. elements

6 Pa fragments of an ozarkodinid

91 Panderodus spp. elements

2 S (coniform) elements Pelekysgnathus sp. indet.

6 indet. bar, blade, and platform fragments

92AD22A (32428-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'20" N., Long. 157 deg. 32'30" W. Fine-grained limestone with abundant small burrows. Thin section is calcareous peloid spiculite that contains calcispheres and brown mud clasts. Sample collected from very fine grained rock (periplatform ooze?) and may contain relatively indigenous faunas. Probably stratigraphically below samples at locality 27. If fauna is not reworked, this sample and that from locality 52 are the oldest from unit Mlri. (description from Dover et al., 2004, p. 32 (Table 1)); [Fine-grained limestone with abundant small burrows. Sample collected from very fine grained lithology (periplatform ooze?) and may contain more indigenous faunas. (description from Harris E&R report dated March 17, 1995; Shipment no. A-95-3)]; [Howard Pass C-3. 68°38'20", 157°32'30". Fine-grained limestone with abundant small burrows. Sample collected from very fine grained lithology (periplatform ooze?) and may contain more indigenous faunas. (description from Harris E&R report dated Jan. 25, 1995; Shipment no. A-95-3a)]

NOTE BY R.B. BLODGETT, NOTE MAJOR AGE DIFFERENCE BETWEEN THE TWO E&R REPORTS

1 Pa element Bispathodus stabilis (Branson and Mehl) ....

.... or B. utahensis Sandberg and Gutschick

1 Pa element Polygnathus purus Voges

Unassigned elements: 1 M and 1 Sa

9 indet. bar, blade, and platform elements

92AD20-4.5 (32425-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'10" N., Long. 157 deg. 31'40" W. Platy, dark-brownish-gray, grayish-orange-weathering, fine-grained limestone riddled with tiny burrows; about 4.5 m below top of 42-m-thick section of unit Mlri. Thin section is spiculite; spicules chiefly siliceous (some calcareous) in a fine-grained carbonate matrix containing muddy wisps and burrow fills and minor radiolarians. Sample collected from very fine grained rock (periplatform ooze?) and may contain relatively indigenous faunas. (description from Dover et al., 2004, p. 32 (Table 1)); [Howard Pass C-3. 68°38'10", 157°31'30". Platey, dark-brownish gray, grayish orange-weathering, fine-grained limestone riddled with tiny burrow.
Sample collected from very fine-grained lithology (periplatform ooze?) and may contain more indigenous faunas.
92AD20-4.5 through 92AD22A from 66.5+m thick measured section in sequence of "Ipnavik facies" of Lisburne Group overlain (unconformably?) by Cretaceous sandstone. The section may be cut by faults, but if is not repeated, 92AD20-4.5 should be the youngest, and 92AD22A should be the oldest. ....92AD20-4.5 and -14.5 collected above change in attitude (fault?)
92AD20-4.5,-14.5 and 92AD220-23 collected from -700-660 m elevation on west side of NW-trending ridge, ~2 miles due east of Cutaway Creek and ~2.5 miles due south of headwaters of Lost Temper Creek, western Brooks Range; SW1/4NE1/4 sec. 28, T. 9 S., R. 24 W. (description from Harris E&R report dated March 17, 1995)]

1 juvenile Pa element Gnathodus texanus Roundy?

1 unassigned Pb element

4 indet. bar, blade, and platform fragments

92AD20-14.5 (32426-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'10" N., Lat. 157 deg. 31'40" W. Crinoidal lime pack/grainstone (probable gravity flow deposit) about 14.5 m below top of 42-m-thick section. Thin section is crinoidal pack/grainstone with lesser bryozoans, siliceous sponge spicules, ostracodes, gastropods, brachiopod fragments, echinoderm spines, and phosphatic bioclasts; minor noncalcareous mud clasts, glauconite, and dolomite. Sample collected from carbonate turbidites (and thus may contain reworked faunas). (description from Dover et al., 2004, p. 33 (Table 1)); [Howard Pass C-3. 68°38'10" W, 157°31'40". Crinoidal lime grainstone/packstone. Probable gravity flow deposit. Sample collected from carbonate turbidites(may contain reworked faunas?).
92AD20-4.5 through 92AD22A from 66.5+m thick measured section in sequence of "Ipnavik facies" of Lisburne Group overlain (unconformably?) by Cretaceous sandstone. The section may be cut by faults, but if is not repeated, 92AD20-4.5 should be the youngest, and 92AD22A should be the oldest. ....92AD20-4.5 and -14.5 collected above change in attitude (fault?)
92AD20-4.5,-14.5 and 92AD220-23 collected from -700-660 m elevation on west side of NW-trending ridge, ~2 miles due east of Cutaway Creek and ~2.5 miles due south of headwaters of Lost Temper Creek, western Brooks Range; SW1/4NE1/4 sec. 28, T. 9 S., R. 24 W. (description from Harris E&R report dated March 17, 1995)]

121 Pa elements Bispathodus utahensis Sandberg and Gutschick (all large and partly incomplete)

1 Pa element Doliognathus latus Branson and Mehl

5 Idioprioniodus sp. indet. element fragments

17 incomplete Pa elements of Pseudopolygnathus spp.

Unassigned elements: 7 robust Pb (Osagean morphotype) and 1 M

Unassigned elements: 11 indet. bar, blad, and platform fragments

1 Pa element Polygnathus inornatus E.R. Branson

2 Pa element fragments Siphonodella sp. indet.

1 Pa element Palmatolepis sp.

92AD220-23 (32427-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'10" N., Long. 157 deg. 31'50" W. Sample from 60-cm-thick graded bed of crinoid-rich limestone about 40 m below top of 42-m-thick section; fault cuts section about 25 m above base. Thin section is skeletal grainstone containing 5-10 percent lithic clast. Bioclasts are 90 percent crinoid ossicles, minor fragments of bryozoans, brachiopods, and ostracodes, and rare echinoderm spines. Lithic clasts include calcareous and siliceous spiculite, lime mudstone, and peloidal-calcisphere pack-grainstone. Sample collected from carbonate turbidites (may contain reworked faunas). (description from Dover et al., 2004, p. 33 (Table 1)); [Howard Pass C-3. 68°38'10", 157°31'50". (description from Harris E&R report dated March 17, 1995)]

10 Pa elements Bispathodus utahensis Sandberg and Gutschick (all large and partly incomplete)

2 Pa elements Gnathodus punctatus (Cooper)

2 Pa elements Polygnathus spp. indet.

6 incomplete Pa elements of Pseudopolygnathus spp.

2 M elements of Osagean morphotype

62 indet. bar, blade, and platform fragments

91AD11J (31744-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35'55" N., Long. 157 deg. 41'00" N. Sample from cross- and parallel-laminated, fine-grained limestone bed (70 cm thick), 1 m above base of 80-m-thick measured section of unit Mlri. Thin section is calcareous spiculite containing lesser siliceous spicules, calcite-replaced radiolarians, and laminae of noncalcareous mud. Table 4 contains additional data from this locality. (description from Dover et al., 2004, p. 33 (Table 1)); [Field nos. 91AD11A, 11G, and 11J are from about an 80 m section of Lisburne Group in the Ipnavik allochthon on a northwest-trending ridge, 2 km southeast of the headwaters of Ribbon Creek and 0.4 km due west of an unnamed tributary of Cutaway Creek. Samples from north side of ridge, east slope. Top of ridge at about 680 m. From lat. 68°54.8', long. 157°38.8', sec. 11, T. 10 S., R. 25 W., Howard Pass C-3 quadrangle.

Field no. 91AD11J (USGS colln. 31744-PC): 1 m above base of section (about 70 m below 91AD11A); 70 cm limey layer with cross and parallel laminations--mostly rather fine grained. (description from Harris, 1992 E&R report)]

3 Pa elements of Bispathodus stabilis (Branson and Mehl)

1 incomplete juvenile Pa element of Gnathodus sp. indet.

1 Sa element fragment of Kladognathus sp. indet.

2 unassigned Pb elements

21 indet. bar, blade, and platform fragments

91Tr32C (31845-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37' N., Lat. 157 deg. 34.5' W. Vuggy, fine- to medium-grained dolomite, sample from two large blocks (possible subcrop) on shoulder of slope. Thin section is dolomite crystal mosaic containing rare siliceous sponge spicules and <1 percent brown mudstone clasts. (description from Dover et al., 2004, p. 34 (Table 1)); [Howard Pass C-3 quad. 68°37.00', 157°34.35'. Lisburne Group (Brooks Range allochthon); vuggy, fine- to medium-grained dolomite. Dolomite crystal mosaic containing rare siliceous sponge spicules and <1 percent brown mudstone clasts.
Sample from two large blocks from rubble on shoulder of slope. Sampled blocks are possibly subcrop. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

11 Pa element fragments Gnathodus texanus Roundy

1 Pa element fragment of a rhachistognathid(?)

66 indet. bar, blade, and platform fragments

91Tr35 , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.3' N., Long. 157 deg. 34.3' W. Sample from approx. 1-ft-thick bed of medium-orange-weathering, sandy limestone to limy sandstone. Thin section is very fine grained, equigranular, angular, calcareous sandstone cemented with calcite. Calcareous clasts (30-40 percent of slide) include crinoid ossicles and brachiopod fragments; other clasts chiefly quartz (20 percent), and minor plagioclase feldspar, chert, biotite, opaque minerals, white mica, and chlorite. Sandy limestone is a common component of the Utukok Fm., but structural complexity at this locality makes this unit assignment uncertain. (description from Dover et al., 2004, p. 34 (Table 1)); [Howard Pass C-3 quad. 68°36.37', 157°34.2'. Kurupa Sandstone (Picnic Creek allochthon); sample from ~1-foot bed of medium-orange-weathering, sandy limestone to limy sandstone. Thin section indicates a very fine-grained quartzose-calcareous, equigranular, angular sandstone with calcite cement. Calcareous clasts include crinoid ossicles and brachiopod fragments that make up 30-40 percent of slide. Slide contains minor plagioclase feldspar, chert, biotite, opaque minerals, white mica, and chlorite. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 apatognathiform(?) element

1 unassigned coniform element

2 Pa element fragments of a hindeodid(?)

4 Pa elements Polygnathus communis Branson and Mehl

1 juvenile Pa element Polygnathus sp. indet.

Unassigned elements: 4 Pb (2 morphotypes), 3 M, and 4 Sc (2 morphotypes)

33 indet. bar, blade, and platform fragments

91Tr28A (31844-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.6' N., Long. 157 deg. 31.9' W. Thick-bedded, medium-gray, fine-grained dolostone containing irregular black chert layers, interbedded with grayish-black, very fine grained, baritic(?) dolostone. Thin section is dolostone having relict peloidal-skeletal grainstone texture locally preserved; one mud-filled burrow contains siliceous sponge spicules and a few radiolarians. (description from Dover et al., 2004, p. 34 (Table 1)); [Howard Pass C-3 quad. 68°36.60', 157°31.90'. Lisburne Group (Brooks Range allochthon): thick-bedded, medium-gray, fine-grained dolomite containing irregular black chert layers interbedded with grayish-black, very fine-grained dolomite, probably baritic. Thin section indicates a dolostone containing little original texture. Relict texture of peloidal-skeletal grainstone locally preserved. One mud-filled burrow noted; mud contains siliceous sponge spicules and a few radiolarians.
Collected from 1.5-meter blocklike outcrop on east bank of tributary. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

Hindeodus aff. H. crassidentatus (Branson and Mehl), 1 Pb, 3 Sa, 2 Sb, and 16 Sc elements

Kladognathus sp. indet., 4 Sa, 2 Sb, and 13 Sc elements

Synclydognathus geminus (Hinde), 16 Pa, 12 Pb and 20 M and S elements

Unassigned elements: 1 Pb and 2 Sc

143 indet. bar, blade, and platform fragments

91Tr24A.1 (31842-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.7' N., Long. 157 deg. 30' W. Talus blocks <1 m in size of very fine grained, medium-yellowish-gray to grayish-yellow, massive carbonate rock. Stratigraphic position within unit uncertain. Thin section is brecciated dolostone containing skeletal fragments. Origianl texture probably a sparsely skeletal mudstone-wackestone. Bioclasts (5-25 percent of the sample) are crinoid ossicles and possible brachiopod and bryozoan fragments; minor detrital quartz. Heavy-mineral concentrate includes rare phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 34 (Table 1)); [Howard Pass C-3 quad. 69°35.98', 157°30.15'. Submitted as Baird Group, talus blocks < than 1 m in size. Very fine-grained, medium-yellowish-gray to grayish-yellow, massive limestone. Stratigraphic position in stack not known. Thin section indicates brecciated dolostone containing skeletal fragments. Original texture appears to have been a skeletal mudstone/-wackestone. Skeletal elements make up 5-25 percent of the sample and are crinoid ossicles and possible brachiopod and bryozoan fragments: minor detrital quartz.
Stack on bed in Cutaway Creek near lake in northeast basin east of base of stack. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 mid Pa fragment of a cavusgnathoid

2 Sa element fragments of Kladognathus sp. indet.

Unassigned elements: 1 M and 2 Sb

25 indet. bar, blade, and platform fragments

91Tr24A.2 (31843-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.7' N., Long. 157 deg. 30' W. Talus blocks <1 m in size of very fine grained, medium-yellowish-gray to grayish-yellow, massive carbonate rock. Stratigraphic positon within unit uncertain. Thin section is skeletal packstone to grain-rich wackestone; muddy matrix is dolomitzed. Skeletal fragments include crinoid ossicles, foraminifers, bryozoan and brachiopod fragments, echinoderm spines, possible ostracode shells and red algae, and a possible gastropod; <1 percent detrital quartz. Rubble of medium-gray-weathering, black to blackish-brown, petroliferous shale near this locality (91JS31D) may correlate with petroliferous rocks exposed on the north side of Mount Bupto (loc. 58) (description from Dover et al., 2004, p. 35 (Table 1)); [Howard Pass C-3 quad. 68°35.98', 157°30.15'. Submitted as Baird Group, talus blocks < 1 m in size. Very fine-grained, medium-yellowish-gray to grayish-yellow, massive limestone. Stratigraphic position in stack not known. Thin section indicates a skeletal packstone to grain-rich wackestone; muddy matrix is dolomitized. Skeletal fragments include crinoid ossicles, foraminifers, bryozoan and brachiopod fragments, echinoderm spines, possible ostracode shells and red algae, and a possible gastropod: <1 percent detrital quartz.
Stack on bend in Cutaway Creek near lake in northeast basin east of base of stack. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 Pa element Bispathodus utahensis Sandberg and Gutschick

Kladognathus sp. indet., 1 Sa and 1 Sc element fragments

1 Pa element Mestognathus praebeckmanni Sandberg, Orchard, and von Bitter

2 Pa elements Synclydognathus geminus (Hinde)

1 unassigned Pb element

5 indet. bar, blade, and platform fragments

91Tr36D (31846-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.4' N., Long. 157 deg. 37.7' W. Talus black from subcrop of very dark to brownish-gray, very fine grained, muddy, turbiditic limestone (grainstone and carbonate mudstone?). Thin section is skeletal-peloidal grainstone including bryozoans, crinoid ossicles, brachiopods, and rare foraminifers. Peloids consistent in size (40-80 microns). Rare orange-brown micritic (dolomitic?) clasts; irregular shapes suggest deposition before complete lithification. Minor but notable disseminated siliceous sponge spicules (24-60 microns in diameter). (description from Dover et al., 2004, p. 35 (Table 1)); [Howard Pass C-3 quad. 68°35.41', 157°37.65'. Ipnavik Lisburne--Talus blocks!! from subcrop of very dark to brownish-gray very fine grained, muddy, turbiditic limestone (grainstone and carbonate mudstone?). Thin section is skeletal-peloidal grainstone including bryozoans, crinoid ossicles, brachiopods, and rare foraminifers. Peloids consists in size (40-80 microns). Rare orange-brown micritic (dolomitic?) clasts; irregular shapes suggest deposition before complete lithification. Minor but notable disseminated siliceous sponge spicules (24-60 microns in diameter). (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 Pa element fragment of Bispathodus cf. B. utahensis Sandberg and Gutschick

2 posterior Pa element fragments of a cavusgnathoid

Idioprioniodus sp., 2 Pa, 2 Pb, and 2 Sa elements

62 indet. bar, blade, and platform fragments

Redeposited Late Devonian conodonts: 1 mid Pa element fragment of Palmatolepis sp. indet.

Redposited Late Devonian conodonts: 1 anterior Pa element fragment of Polygnathus sp. indet.

91Tr50.1 , Howard Pass , Howard Pass C-3. Lat. 68 deg. 32.4' N., Long. 157 deg. 28.9' N. Carbonate talus block. Thin section is a breccia; matrix is clear, relatively coarse-grained anhedral calcite that has undulatory extinction. "Clasts" include brown, noncalcareous mudstone, dark, clotty micrite, crinoid ossicles, dolostone, and chert. Some fo the micrite clasts contain chalcedony-filled radiolarians and siliceous sponge spicules (240 and 60 microns in diameter, respectively). If fauna is not reworked, this sample and that from locality 24 are the oldest recovered from the unit Mlri. (description from Dover et al., 2004, p. 35 (Table 1)); [Howard Pass C-3 quad. 68°32.39', 157°28.9'. Ipnavik Lisburne(?) (block of strange limestone). Thin section is a breccia--matrix is clear, relatively coarse-grained anhedral calcite with sweeping extinction. "Clasts" include brown, noncalcareous mudstone, dark, clotty micrite, crinoid ossicles, dolostone, and chert. Some of the micrite clasts contain chalcedony-filled radiolarians (240 microns) and siliceous sponge spicules (60 microns). (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

3 Pa element fragments of Polygnathus sp. indet. of Middle Devonian to Kinderhookian morphotype (specimens corroded)

1 indet. bar fragment

91Tr45E , Howard Pass , Howard Pass C-3. Lat. 68 deg. 32.05' N., Long. 157 deg. 32.8' W. Sample from dense, grayish-black, dark-buff-weathering, fine-grained limestone in 30-cm-thick interbeds within approx. 2-m-thick interval of platy shale; thin section is sponge spiculite, possibly bioturbated. Spicules (10-30 percent of slide) mostly silicieous but some calcareous and others pyritized. Local pale lenses of calcareous spicules and lesser peloids and micritized bioclasts in matrix of sparry calcite cement. Heavy-mineral concentrate includes phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 36 (Table 1)); [Howard Pass C-3 quad. 68°32.06', 157°32.8'. Lisburne Group (Picnic Group (Picnic Creek allochthon?); thin section is spong spiculite, possibly bioturbated. Spicules 10-30% of slide--spicules mostly siliceous but some calcareous and others pyritized. Local pale lenses of calcareous spicules and lesser peloids and micritized skeletals in sparry calcite cement matrix. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 Pa element fragment Bispathodus? sp. indet.

91Tr40A , Howard Pass , Howard Pass C-3. Lat. 68 deg. 31.2' N., Long. 157 deg. 30.1' W. Sample from upper part of unit Mlb; approx. 25 m below scarp of massive brecciated cherts. From approx. 1-ft-thick layer of carbonate within platy mudstone. Grayish-black, grayish-buff-weathering, partly laminated, carbonaceous dolostone. Thin section is carbonaceous dolomite crystal mosaic. Rocks at about this stratigraphic horizon but a few hundred meters northeast (90AD54; 90JS16) include black, very fine-grained, petroliferous , and phosphatic carbonate. Chert overlying carbonate at this locality contains Paleozoic (possibly Permian) radiolarians (table 2). (description from Dover et al., 2008, p. 36 (Table 1)); [Howard Pass C-3 quad. 68°31.23', 157°30.15'. Kuna Formation (Brooks Range allochthon); ~25 m below scarp of massive brecciated cherts. ~1 ft layer of calcareous silt to limestone within platy mudstone (cf. 91Tr05B). Grayish-black, grayish-buff-weathering, partly laminated, carbonaceous limestone. Thin section shows "Kuna-type" dolomite crystal mosaic. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 unassigned Pb element of Devonian and Mississippian morphotype

19 indet. bar, blade, and platform fragments; all specimens badly borken and part to substrantially covered with organic matter

91Tr13 (31841-PC) , Howard Pass , Hoard Pass C-3. Lat. 68 deg. 31.1' N., Long. 157 deg. 35.5' W. Sample from 2 m of Lisburne Group exposed below diabase sill. Lenticularly interbedded, dark, very fine grained limestone and black chert. Thin section is recrystallized carbonate with little relict texture; one possible crinoid columnal noted and minor disseminated opaque minerals. (description from Dover et al., 2004, p. 36 (Table 1)); [Howard Pass C-3 quad. 68°31.08', 157°36.0'. 2 m of Lisburne Group exposed below diabase sill. Lenticulary interbedded dark, very fine grained limestone and black, lensoidal chert. Ipnavik allochthon--rocks equivalent to the Rim Butte unit of Dumoulin and others (in press). Thin section is recrystallized carbonate with little relict texture; one possible crinoid columnal and minor disseminated opaques.
Outcrop beneath sill on scarp of black at end of high ridge, a few hundred meters north of 91TR09. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 Pa element Bispathodus aff. B. utahensis Sandberg and Gutschick

3 P elements Eotaphrus burlingtonensis Pierce and Langenheim

1 Pa element fragment Gnathodus sp.

8 Pa elements Polygnathus communis Branson and Mehl

1 Pa element Protognathodus cordiformis Lane, Ziegler, and Sandberg

3 Pa elements Pseudopolygnathus nudus Pierce and Langenheim morphotype 2

12 Pa element fragments Pseudopolygnathus spp.

Scaliognathus anchoralis Branson and Mehl 2 Pa and 8 S element fragments

Unassigned elements: 10 Pb (4 morphotypes), 9 M (2 morphotypes), 1 Sa, and 8 S element fragments

44 indet. bar, blade, and platform fragments

91Tr09B (31840-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 31.07' N., Long. 157 deg. 36.05' W. Brownish-gray, fine grainstone interlayered with <50 percent black chert. Within 1-2 m of top of underlying diabase sill. Thin section is recrystallized carbonate with little relict texture--chiefly anhedral calcite crystals. (description from Dover et al., 2004, p. 37 (Table 1); [Howard Pass C-3 quad. 68°31.07', 157°36.05'. Lisburne Group, Ipnavik allochthon. Brownish-gray, fine grainstone interlayered with <50 percent black chert. Within 1-2 m of top of underlying diabase sill. Thin section indicates recrystallized carbonate with little relict texture--chiefly anhedral calcite crystals.
Exposure on north wall of tributary at camp, across end of Ipnavik ridge. Block of Ipnavik dropped down from south end of Ipnavik sequence. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

8 Pa element fragments Bispathodus utahensis Sandberg and Gutschick

2 Pa elements Doliognathus latus Branson and Mehl

1 juvenile Pa element Dollymae sp. indet.

4 Pa element fragments and juveniles Gnathodus sp. indet.

8 P elements Geniculatus sp.

24 "Hindeodella" segaformis Bischoff s.f. bar fragments

15 Pa elements Polygnathus communis Branson and Mehl

5 Pa elements Pseudopolygnathus oxypageus Lane, Sandberg, and Ziegler

20 Pa element fragments Pseudopolygnathus spp. indet.

Unassigned elements: 3 robust Pb, 17 M (4 morphotypes), 2 Sa, 2 Sb (2 morphotypes), and 7 Sc (+3 morphotypes)

101 indet. bar, blade, and platform fragments

10 ichthyoliths

Redeposited Kinderhookian conodonts: 2 juvenile Pa fragments Siphonodella sp. indet.

91Tr05B , Howard Pass , Howard Pass C-3. Lat. 68 deg. 31' N., Long. 157 deg. 35.5' N. Sample from 1-m-thick lens of medium-brownish-gray-weathering, calcareous mudstone within black noncalcareous mudstone. Thin-section is carbonaceous dolomite crystal mosaic. Heavy-mineral concentrate includes very minor fluorite and barite(?). (description from Dover et al., 2004, p. 37 (Table 1)); [Howard Pass C-3 quad. 68°30.82', 157°35.75'. Kuna Formation: 1-meter lens of medium-brownish-gray-weathering, calcareous mudstone within black mudstone. Thin-section indicates "Kuna"-type dolomite crystal mosiac.
From West nose of Mount Bupto; Brooks Range allochthon. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

2 indeterminate bar fragments

91Tr08 , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.7' N., Long. 157 deg. 36.0' W. Very fine grained, dark-gray, fractured limestone. Thin section is brecciated interlayers of dark, noncalcareous mudstone containing 20-40 percent sponge spicules, and fine-grained limestone containing minor sponge spicules and rare relict radiolarians. (description from Dover et al., 2004, p. 37 (Table 1); [Howard Pass C-3 quad. 68°30.73', 157°36.0'. Probable Lisburne geoblob of the Ipnavik allochthon. Thin section indicates sponge spiculite (20-40 percent) in dark, noncalcareous mud matrix and minor spong spicules in calcite matrix; rare relict radiolarians. Thin section is brecciated.
Rubble subcrop patch. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

3 indeterminate ramiform fragments

91Tr07A (31839-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.7' N., Long. 157 deg. 34.6' W. Sample from 1-ft-diameter block of very finely vuggy, fine- to medium-gray-weathering, very light-gray to creamy dolostone containing thin lenses of black chert along with crinoid columnals >1/4 inch in diameter. From apparent subcrop near top of 30-m-thick section and within 3 m of contact with overlying black chert. Some vugs contain solid hydrocarbons. Thin-section is coarse-crystalline (0.2-0.4 mm) dolostone containing a few skeletal fragments (mostly crinoid ossicles) that may still be calcite. (description from Dover et al., 2004, p. 38 (Table 1)); [Howard Pass C-3 quad. 68°30.69', 157°34.75'. Lisburne Group (Brooks Range allochthon): about one-foot block of fine- to medium-grained, light- to medium-gray-weathering, very finely vuggy, very light-gray to creamy, sugary dolomite containing thin lenses of black chert with >1/4 inch crinoid columnals. From apparent subcrop beneath talus and within 3 m of contact with overlying black chert. About 30 m of the same lithology occurs in the section. Thin-section indicates coarse-crystalline (0.2-o.4 mm) dolostone, with a few skeletal fragments (mostly crinoid ossicles) that may still be calcite. Slide looks like shallow-water dolostone, not Kuna-type. Too dolomitized to distinguish original texture.
From creek southwest of Mt. Bupto. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

Hindeodus crassidentatus (Branson and Mehl), 36 Pa and 1 Sc elements

Kladognathus? sp. indet., 6 Sa and 7 Sc elements

75 Pa elements Polygnathus communis communis Branson & Mehl

34 Pseudopolygnathus multistriatus Mehl and Thomas

Unassigned elements: 9 Pb (2 morphotypes), 23 M (5 morphotypes), 2 Sb (2 morphotypes), and 6 Sc (2 morphotypes)

32 indet. bar, blade, and platform fragments

92AD47A (32439-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30'53" N., Long. 157 deg. 32'00" W. Sample from 5-cm-thick unulatory beds of lime crinoidal packstone-grainstone with millimeter-thick shaly partings. Thin section is crinoidal grainstone along with minor dolomite and chert. Collected approx. 20 m stratigraphically below 92AD49A (loc. 68) and approx. 340 m below the top of the Mlb unit. Heavy-mineral concentrate includes gastropod steinkerns. (description from Dover et al., 2004, p. 38 (Table 1));
[Howard Pass C-3. 68°30'53", 157°32'00". 5 cm-thick undulatory beds of lime crinoidal packstone-grainstone with mm-thick shaly partings.
Collected ~2- stratigraphically below 92AD49A.
Collected at ~940 m elevation, due west of 92AD49; center sec. 4, T. 11 S., R. 24 W.
Armstrong suggested an age of late Osagean or Meramecian (based on brachiopods and corals) for 47A and 47E lithologies, slightly (few 100 m) south of this locality. (description from Harris E&R report dated March 17, 1995)]

3 Pa elements (incomplete) Bispathodus utahensis Sandberg and Gutschick ....

..... or B. stabilis (Branson and Mehl)

Kladognathus sp. indet., 1 M and 1 Sb-Sc element fragments

14 Pa elements Polygnathus communis communis Branson and Mehl

1 unassigned Sc element

21 indet. bar, blade, and platform fragments

92AD47E (32440-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30'53" N., Long. 157 deg. 32'00" W. Thin (4- to 8-cm thick), nodular-bedded to evenly bedded, skeletal (crinoidal-bryozoan?) lime pack/grainstone with local shaly partings. Thin section is partly silicified skeletal supportstone; bioclasts include abundant crinoid ossicles, brachiopod and bryozoan fragments, and siliceous sponge spicules. Collected at the lowest exposed beds here, approx. 20 m stratigraphically below 92AD47A and approx. 360 m below the top of unit Mlb. (description from Dover et al., 2004, p. 38 (Table 1));
[Howard Pass C-3. 68°30'53", 157°32'00". 4-8 cm-thick, nodular- to even-bedded, skeletal (crinoidal-bryozoan?) lime packstone-grainstone with local shaly partings.
Collected at the lowest exposed beds here, ~20 m stratigraphically below 92AD47A.
Collected at ~900 m elevation at same locality as above. (description from Harris E&R report dated March 17, 1995)]

16 Pa elements (mostly incomplete) Bispathodus utahensis Sandberg and Gutschick .....

.... or B. stabilis (Branson and Mehl)

48 Pa elements Polygnathus communis communis Branson and Mehl (small juveniles to adults)

Unassigned elements: 9 M (4 morphotypes), 1 Sa, 1 Sb, and 4 Sc (2 morphotypes)

46 indet. bar, blade, and platform fragments

92AD49A (32438-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30'55" N., Long. 157 deg. 31'45" W. Sample from 5-15 cm-thick layers and lenses of dolostone intercalated with similarly thick layers and lenses of chert showing skeletal wackestone to packstone texture. Thin section is dolomite crystal mosaic containing rare relict crinoid ossicles and spicules. Collected from lowest outcrop of dolostone and chert, approx. 155 m below 92AD-120 (loc. 71) and approx. 320 m below the top of unit Mlb. Heavy mineral concentrate is chiefly fluorite. (description from Dover et al., 2004, p. 39 (Table 1));
Howard Pass C-3. 68°30'55", 157°31'45". 5-15 cm-thick layers and lenses of dolostone intercalated with similarly thick layers and lenses of chert bands showing skeletal wackestone to packstone texture. Collected from lowermost outcrop of dolostone and chert, ~120m(?) stratigraphically below base of 92AD33 measured section and >140 m below 92AD33-120.
Collected at ~1020 m elevation/ ~0.5 mile due north of base of measured section (92AD33) and due east of 92AD47; center sec. 4, T. 11 S., R. 24 W. (description from Harris E&R report dated March 17, 1995).

3 Pa elements (incomplete) Bispathodus utahensis Sandberg and Gutschick ....

..... or B. stabilis (Branson & Mehl)

3 Sb-Sc element fragments of Kladognathus sp. indet.

Unassigned elements: 3 Pb and 3 M (2 morphotypes)

19 indet. bar, blade, and platform fragments

91Tr47A (31847-PC) , Howard Pass , Howard Pass C-3. North-south traverse through section of unit Mlb: 68 deg. 30.6' N., 157 deg. 32.45' W. (base, 47A) to 68 deg. 30.5' N., 157 deg. 32.45' W. (top, 47F). Samples at this locality from traverse through section of unit Mlb exposed along creek bisecting Mount Bupto. Sample 47A from base of section; approximately equivalent to strata at loc. 67. >3 m of massive, medium- to fine-grained, dark-brownish-gray, medium-gray-weathering limestone (probable encrinite) in 5- to 45-cm-thick beds. Thin section is skeletal packstone. Bioclasts (as much as 3 mm in diameter) include crinoid ossicles, bryozoans, small bivalves (brachiopods and (or) ostracodes), and siliceous sponge spicules; some bioclasts partly micritized. A few thin seams of noncalcareous mud contain very abundant sponge spicules. Heavy-mineral concentrate includes pyritized spine steinkern. (description from Dover et al., 2004, p. 39 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45'. Lisburne Group (Brooks Range allochthon); >3 m massive limestone, partly bedded 2"-18". Medium- to fine-grained, dark-brownish-gray, medium-gray-weathering probably encrinite (corals buttons, crinoid columnals). Thin section is skeletal packstone. Skeletals as much as 3 mm in diameter include crinoid ossicles, bryozoans, small bivalves (brachs and (or) ostracodes), and siliceous sponge spicules; some skeletals partly micritized. A few thin seams of noncalcareous mud contain very abundant sponge spicules. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

Hindeodus aff. H. crassidentatus (Branson and Mehl), 2 Pa and 1 M elements

1 Sc element of Kladognathus sp. indet.

2 Pa elements of Polygnathus communis Branson and Mehl

2 unassigned M elements

19 indet. bar, blade, and platform fragments

91Tr47B (31848-PC) , Howard Pass , Howard Pass C-3. North-south traverse through section of unit Mlb: 68 deg. 30.6' N., 157 deg. 32.45' W. (base, 47A) to 68 deg. 30.5' N., 157 deg. 32.45' W. (top, 47F). Sample from <5 m-thick interval of thick-bedded, dark-gray to brownish-gray, fine-grained, encrinitic limestone. Thin section is skeletal grainstone; bioclasts mostly bryozoans and lesser crinoid ossicle and brachiopods. Some bioclasts partly silicified; others have micritized rims. Local areas of dolomitic mud rich in calcareous spicules; some muddy zones may be burrows. Heavy-mineral concentrate includes phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 39 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45'. Lisburne Group (Brooks Range allochthon); <5 m interval of thick-bedded, dark-gray to brownish-gray, fine-grained, encrinitic limestone. Thin section is skeletal grainstone. Skeletals mostly bryozoans, lesser crinoid ossicles and brachiopods. Some skeletals partly silicified; others have micritized rims. Local areas of dolomitic mud rich in calcareous spicules; some muddy zones may be burrows. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

1 mid-Pa element fragment of bispathodid?.

1 Pa fragment Hindeodus aff. H. crassidentatus (Branson and Mehl)

1 Pa fragment mestognathid?

1 juvenile Pa element Mestognathus aff. M. harmalai von Bitter, Sandberg, and Orchard

Unassigned elements: 2 Pb and 2 Sc

7 indet. bar, blade, and platform fragments

91Tr47C (31849-PC) , Howard Pass , Howard Pass C-3. North-south traverse through section of unit Mlb: 68 deg. 30.6' N., 157 deg. 32.45' W. (base, 47A) to 68 deg. 30.5' N., 157 deg. 32.45' W. (top, 47F). Sample from approx. 15-m-thick ribbed outcrop consisting chiefly of grayish-black chert in 5- to 10-cm-thick beds; locally abundant lenses of very fine grained, medium-brownish-gray, medium-buff-weathering dolostone within chert. Thin section is skeletal supportstone. Most of slide is silicified; one end is dolomitized. Relict skeletal grains include bryozoans, crinoid ossicles, ostracodes and minor siliceous sponge spicules. Heavy-mineral concentrate includes phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 40 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45'. Lisburne Group (Brooks Range allochthon); from ~ 15 m ribbed outcrop consisting of 2 m of 2"-8" bedded grayish-black chert at bottom, 5 m similar material but slightly thinned bedded and upper 2 m is dolomite within chert. Thin section is skeletal supportstone. Most of slide is silicified; one end is dolomitized. Relict skeletals include bryozoans, crinoid ossicles, ostracodes and minor siliceous sponge spicules. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

46 Pa elements (all incomplete) Bispathodus utahensis Sandberg and Gutschick

Idioprioniodus sp., 2 Pb, 3 Sa, and 8 Sc elements

1 Pa element fragment Pseudopolygnathus sp.

Unassigned elements: 2 Pb, 65 M (+4 morphotypes), 5 Sa, and 10 Sc (2 morphotypes)

94 indet. bar, blade, and platform fragments

91Tr47D (31851-PC) , Howard Pass , Howard Pass C-3. North-south traverse through section of unit Mlb: 68 deg. 30.6' N., 157 deg. 32.45' W. (base, 47A) to 68 deg. 30.5' N., 157 deg. 32.45' W. (top, 47F). Interlayered black chert and carbonate containing some fossil fragments. Thin section is dolostone (crystals 0.1-1.0 mm) with little relict texture. (description from Dover et al., 2004, p. 40 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45'. Lisburne Group (Brooks Range allochthon); interlayers black chert carbonate containing some fossil fragments. Thin section is dolostone containing crystals 0.1-1.0 mm and little relict texture. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

Bispathodus aff. B. utahensis Sandberg and Gutschick, 5 Pa and 1 Pb elements

2 Pa elements Hindeodus aff. H. crassidentatus (Branson and Mehl)

Idioprioniodus sp. indet., 2 Sa and 9 Sc elements

Unassigned elements: 2 Pb (2 morphotypes) and 8 M (3 morphotypes)

78 indet. bar, blade, and platform fragments

91Tr47E (31852-PC) , Howard Pass , Howard Pass C-3. North-south traverse through section of unit Mlb: 68 deg. 30.6' N., 157 deg. 32.45' W. (base, 47A) to 68 deg. 30.5' N., 157 deg. 32.45' W. (top, 47F). Sample from approx. 5 m of interbedded dolostone and chert. Chert, in beds as much as 25 cm thick, appears to be silicified encrinite; dolostone in undulous beds that locally contain wavy laminations. Thin section mostly dolostone (crystals 30-160 microns) with some relict, locally silicified bioclasts (bryozoans and possible crinoid ossicles and brachiopod fragments). Several layers of dark brown, noncalcareous mud rich in siliceous sponge spicules. Lithofacies and biofacies of these strata suggest correlation with 92AD33-91 (loc. 71). (description from Dover et al., 2004, p. 40 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45'. Lisburne Group (Brooks Range allochthon); ~5 m ribbony dolomite--chert as much as 10" thick, silicified encrinite, and lunpy dolomite containing wavy laminations. Thin section mostly dolostone (crystals 30-160 microns). Some silicified bryozoans, possible crinoid ossicles and brachiopod fragments, rare radiolarians(?). Several layers of dark brown, noncalcareous mud rich in siliceous songe spicules. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

9 Pa element fragments Bispathodus utahensis Sandberg and Gutschick

1 P element Eotaphrus burlingtonensis Pierce and Langenheim

2 Sb elements Synclydognathus geminus (Hinde)

Unassigned elements: 7 Pb (3 morphotypes), 26 M (+3 morphotypes), 2 Sa, 1 Sb, and 18 Sc (2 morphotypes)

125 indet. bar, blade, and platform fragments

91Tr47F (31853-PC) , Howard Pass , Howard Pass C-3. North-south traverse through section of unit Mlb: 68 deg. 30.6' N., 157 deg. 32.45' W. (base, 47A) to 68 deg. 30.5' N., 157 deg. 32.45' W. (top, 47F). Outcrop of chiefly light-gray chert, but collection is encrinitic dolomite from mostly cherty talus block. Sample is stratigraphically highest collection made at this locality. Thin section is mostly dolostone but contains relict calcite crinoid ossicles (2-5 mm in diameter); origianl texture probably crinoidal grainstone. (description from Dover et al., 2004, p. 41 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45'. Lisburne Group (Brooks Range allochthon); outcrop chiefly light-gray chert, but collection encrinitic dolomite from chiefly cherty talus block. Thin section dolostone with relict calcite crinoid ossicles (2-5 mm) in grain support--original texture probably crinoidal grainstone. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

Bispathodus aff. B. utahensis Sandberg and Gutschick, 7 Pa and 1 Pb elements

Digryate apparatus, 1 Pa and 1 Sa elements

Uassigned elements: 2 Pb ( 2 morphotypes), 1 M, 1 Sb, and 6 Sc

19 indet. bar, blade, and platform fragments

91Tr47G (31854-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30'14" N., Long. 157 deg. 32'35" W. Distinctly bedded bioclastic limestone resembling 91Tr47A and B (loc. 69) and probably a structural repeat of the interval that produced those samples. Thin section is skeletal grainstone; bioclasts include crinoid ossicles, echinoderm spines, bryozoans, and brachiopods. Heavy-mineral concentrate includes phosphatized bioclasts and steinkerns, and phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 41 (Table 1)); [Howard Pass C-3 quad. 68°30.60', 157°32.45". Lisburne Group (Brooks Range allochthon); distinctly bedded bioclastic limestone resembling 91Tr47A and B and probably a repeat of the unit that produced those samples. Thin section skeletal grainstone. Skeletals include crinoid ossicles, echinoderm spines, bryozoans, and brachiopods. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

3 Pa element fragments Bispathodus sp. indet.

1 juvenile Pa element Clydagnathus? sp. indet.

Kladognathus sp., 2 Sa and 3 Sc elements

5 Pa elements Polygnathus communis communis Branson and Mehl

Unassigned elements: 2 Pb (2 morphotypes) and 2 M (2 morphotypes)

21 indet. bar, blade, and platform fragments

92AD33-0.2 (32433-PC) , Howard Pass , Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Samples at this locality from a 165-m-thick measured section of unit Mlb (upper part); on trend with (and 0.25 mi south of ) section measured by Armstrong (1970). Sample from 3-m-thick interval of >80 percent chert. Collected from less cherty, uppermost 0.5 m of dolostone in 5- to 8-cm-thick beds interlayered with cherty bands (10-15 percent) that preserve crinoidal pack/grainstone texture. Thin section is dolomitized crinoidal packstone. Collected 0.2 m below top of measured section; approx. 30 m below top of unit Mlb. Heavy mineral concentrate: chiefly fluorite, phosphatic brachiopod fragments, conodonts, and lesser ichthyoliths. Section contains brachiopods and rugose corals of late Osagean or Meramecian age, and colonial corals (Lithostrotion (Siphonodendron) sinuosum (Kelly)) and endothyrid foraminifers of Meramecian age (Armstrong, 1970, 1975). (description from Dover et al., 2004, p. 41 (Table 1)).

[Howard Pass C-3. 68°30'43", 157°31'00". Sample from 3 m-thick interval of >80% chert. Collected from less cherty, uppermost 0.5 m of 5-8 cm-thick beds of dolostone with 10-15% cherty bands preserving crinoidal packstone-grainstone texture.
Collected from 0.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).

92AD33-0.2 to -120 from 1240 m and 1100 m elevation of continuously exposed chert and dolostone along trend with measured section of Gus Armstong (<0.25 mile due north), who suggested an age of Meramecian (based on silicified colonial corals and forams) for the upper 100 m (at least) of section (see Armstrong, AAPG Bulletin, v. 54, p. 251+, 1970); N part NE1/4 sec. 9, T. 11 S., R. 24 W, lat. 68°30'43" to 68°30'37", long. 157°31'00" to 20", Howard Pass C-3 quadrangle. (description from Harris E&R report dated March 17, 1995)]

Bispathodus utahensis Sandberg and Gutschick 413 Pa, 37 Pb, and 8 Sc elements

2 incomplete Pa elements Embsaygnathus sp. indet.

1 juvenile Pa element Gnathodus sp. indet.

Hindeodus cristulus (Youngquist and Miller), 2 Pa and 3 Pb elements

Idioprioniodus conjunctus (Gunnell), 7 Pa, 1 Pb, 5 M, 3 Sa, and 1 Sb elements

Kladognathus tenuis (Rexroad), 67 P, 102 M, 16 Sa, and 147 Sb-Sc elements

Synclydognathus geminus (Hinde), 1 Pa and 5 S elements

34 Pa Vogelgnathus postcampbelli (Austin and Husri)

Unassigned elements: 3 Pb (2 morphotypes), and 2 Sc

+200 indet. bar, blade, and platform fragments

92AD33-30 (32434-PC) , Howard Pass , Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 60-cm-thick massive bed (with irregular laminae due to silicified bioclasts) of fetid dolostone containing hydrocarbon-filled vugs and 5- to 10 percent chert nodules preserving skeletal (including crinoidal) wackestone and packstone textures. Thin section is dolomite crystal mosaic containg 10-15 percent elongate vugs, some of which are lines with solid hydrocarbons. Collected 30 m below top of measured section. (description from Dover et al., 2004, p. 42 (Table 1))

[Howard Pass C-3. 68°30'43", 157°31'00". 60 cm-thick massive bed (with irregular laminae due to silicified skeletals) of fetid dolostone with hydrocarbon filled vugs and 5-10% chert nodules preserving skeletal (including crinoidal) wackestone and packstone texture. Collected from 30.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).

10 Pa elements Cavusgnathus unicornis Youngquist and Miller

Bispathodus utahensis Sandberg and Gutschick, 14 Pa (all incomplete) and 1 Pb elements

Kladognathus tenuis (Rexroad), 4 P, 25 M, 3 Sa, and 17 Sb-Sc elements

1 Pa Synclydognathus geminus (Hinde)

Unassigned elements: 2 M (2 morphotypes)

201 indet. bar, blade, and platform fragments

92AD33-61.5 (32435-PC) , Howard Pass , Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 50-cm-thick bed of dolostone immediately underlying chert that has crinoidal grainstone texture. Thin section is dolomite-crystal mosaic containing a few relict crinoid ossicles and having 50-10 percent chiefly intercrystalline porosity. Collected 61.5 m below top of measured section. (description from Dover et al., 2004, p. 42 (Table 1)).
[Howard Pass C-3. 68°30'43", 157°31.00". 50 cm-thick bed of dolostone immediately underlying chert with crinoidal grainstone texture.
Collected from 61.7 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).

Bispathodus utahensis Sandberg and Gutschick, 7 Pa (all incomplete) and 1 Pb elements

16 small Pa element fragments Bispathodus utahensis Sandberg and Gutschick?

Kladognathus sp. indet., 3 P, 9 M, 2 Sa, and 11 Sb-Sc elements (all fragments)

41 indet. bar, blade, and platform fragments

92AD33-91 (32436-PC) , Howard Pass , Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 30 cm x 2 m-long lens of dolostone within chert that has crinoidal-skeletal packstone-grainstone texture. Thin section is dolomite crystal mosaic that contains a chert lens displaying relict bioclasts (chiefly crinoid ossicles). Collected 91 m below top of measured section. Heavy-mineral concentrate is chiefly fluorite. (description from Dover et al., 2004, p. 42 (Table 1)).
[Howard Pass C-3. 68°30'43", 157°31'00". 30 cm x 2 m-long lens of dolostone within chert with crinoidal-skeletal packstone-grainstone texture. Collected from 91.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).

2 P element fragments Eotaphrus burlingtonensis Pierce and Langenheim

Kladognathus sp. indet., 9 M, 3 Sa, and 6 Sb-Sc elements (all fragments)

33 indet. bar, blade, and platform fragments

92AD33-120 (32437-PC) , Howard Pass , Howard Pass C-3. Measured section extends from 68 deg. 30'40"/157 deg. 31'00" (top) to 68 deg. 30'32"/157 deg. 31'34" (base). Sample from 50-cm-thick bed of fetid dolostone containing relict crinoids and solid hydrocarbons in vugs. Thin section is dolomite crystal mosaic that contains rare relict crinoid ossicles. Collected 120 m below top of measured section. Heavy-mineral concentrate is chiefly fluorite. (description from Dover et al., 2004, p. 42 (Table 1));
Howard Pass C-3. 68°30'37", 157°31'20". 50-cm thick bed of fetid dolostone with relict crinoids and hydrocarbons in vugs. Collected from 120.2 m below top of measured section.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).

3 incomplete Pa elements Polygnathus communis communis Branson and Mehl

4 Sb-Sc element fragments Kladognathus sp. indet.

4 indet. bar, blade, and platform fragments

92AD32A (32432-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30'40" N., 157 deg. 30'55" W. Buff-weathering, very fine-grained dolostone intercalated with black siliceous mudstone; uppermost part of unit Mlb. Stratigraphically above strata at loc. 71; equivalent to, or slightly stratigraphically below, strata at loc. 58. Thin section is fine-crystalline dolostone, with lenses of chert that contain siliceous sponge spicules and lesser radiolarians. (description from Dover et al., 2004, p. 43 (Table 1); [Howard Pass C-3. 68°30'40", 157°30'55". Buff-weathering, very fine-grained dolostone intercalated with black shale.
92AD32, 33, 49A, 47 from platformal facies of Lisburne Group at Mt. Bupto, ~1-2 miles east of headwaters of Bushy Creek and ~4 miles southwest of Rim Butte along west side of eastern half of Mount Bupto, western Brooks Range. 92AD32A collected from "Black Lisburne" facies, overlying (structurally and stratigraphically(?) rest of the samples (92AD33, 49, 47). Age of similar rocks at Ivotuk Hills is Chesterian (85ASi14-18).
Collected from the saddle at top of Mt. Bupto, between peak 159 m to the north and a peak 1220+ m to the southeast; N. part NE1/4 sec. 9, T. 11 S., R. 24 W. (description from Harris E&R report dated March 17, 1995)]

1 Pa element Bispathodus utahensis Sandberg and Gutschick

4 Pa elements Gnathodus texanus Roundy

107 indet. bar, blade, and platform fragments

92AD45B (USGS loc. 11950-SD, also 12464-SD) , Howard Pass , Both samples (92AD45B, 45C) collected along N-S segment of ridge. From a dolomitic brachiopod packstone. (description from Blodgett E&R report of 5/3/94) [Howard Pass B-5. Lat. 68 deg. 29'57" N., Long. 158 deg. 35'35" W. Dolomitic brachiopod packstone. Thin section is dolomite crystal mosaic containing a few silicified bioclasts, including probable brachiopod fragments and crinoid ossicles. Collected from unnamed Devonian limestone, stratigraphically equivalent to 92AD45C but in different facies. These rocks stratigraphically underlie strata at loc. 74; approx. 130 m of total section exposed at the two localities. Heavy-mineral concentrate is chiefly phosphatic brachiopod fragments. Brachiopods of early Eifelian age collected from this locality (see table 3). (description from Dover et al., 2004, p. 43 (Table 1))]; [92AD45B. USGS loc. 12464-SD. Howard Pass B-5. 68°29'58", 158°35'32". Dolomitic brachiopod packstone. Collected from unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD44D and 45C, but in different(?) facies.
Collected north of 92AD44D. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

140 Belodella devonica (Stauffer) elements

Polygnathus parawebbi Chatterton, 38 Pa, 16 Pb, 7 M, 6 Sa, 4 Sb, and 6 Sc elements

46 indet. bar, blade, and platform fragments

6 ichthyoliths

92AD45C (USGS loc. 11951-SD, also 12465-SD) , Howard Pass , Both samples (92AD45B, 45C) collected along N-S segment of ridge. From a limey brachiopod packstone. (description from Blodgett E&R report of 5/3/94) [Howard Pass B-5. Lat. 68 deg. 29'57" N., Long. 158 deg. 35'35" W. Limey brachiopod packstone. Thin section is brachiopod-crinoid wackestone; matrix dolomitized and bioclasts largely silicified. Collection from an unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD45B, but in different facies. Brachiopods of early Eifelian age collected from this locality (see table 3). (description from Dover et al., 2004, p. 43 (Table 1))]; [92AD45C. USGS loc. 12465-SD. Howard Pass B-5. 68°29'58", 158°35'32". Limy brachiopod packstone. Collected from unnamed Devonian limestone, stratigraphically equivalent(?) to 92AD44D and 45B, but in different(?) facies. Collected north of 92AD44D. (description from Harris E&R reports dated Jan. 25, 19995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-93-3)]

1 Belodella sp. indet. element

Polygnathus parawebbi Chatterton, 15 Pa, 1 Pb, 1 M, and 1 Sb elements

3 Pa element fragments Polygnathus sp. indet.

24 indet. bar, blade, and platform elements

92AD28A-22 (12460-SD) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 29'43" N., Long. 158 deg. 35'00" W. Skeletal lime grainstone lenses containing crinoid ossicles and bryozoans. Thin section is skeletal packstone with locally well developed geopetal fabric and minor peloids. Divers bioclasts include crinoid ossicles, foraminifers, and fragments of bryozoans, brachiopods, gastropods, and ostracodes; many bioclasts are micritized. Collected from locally youngest(?) part of unnamed Devonian limestone; 130 m of total section exposed here and at loc. 73. Heavy-mineral concentrate includes phosphatic brachiopod fragments, phosphatized bryozoan and gastropod fragments, and conodont pearls. (description from Dover et al., 2004, p. 44 (Table 1)); [Howard Pass B-5. 68°29'43", 158°35'00". Skeletal lime grainstone lenses with crinoids and bryozoans.
Collected from locally youngest(?) part of unnamed Devonian limestone.
Collected from easternmost part of east-west segment of NW-trending ridge. ~11.75 miles due east of Wager Creek, ~0.5 mile due west of the headwaters of Twistem Creek, western Brooks Range; N. part sec. 13, T. 11 S., R. 29 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

3 Belodella sp. elements

1 Dvorakia sp. element

4 Neopanderodus sp. elements

1 Pb Oulodus sp. indet. element

1 Pa element Polygnathus aff. P. eifelius Bischoff and Ziegler

6 Pa elements Polygnathus linguiformis linguiformis Hinde gamma morphotype

15 Pa elements Polygnathus parawebbi Chatterton

15 Pa element fragments or juveniles Polygnathus spp. indet.

Unassigned elements: 1 Pb, 1 M, and 3 Sc (2 morphotypes)

26 indet. bar, blade, and platform fragments

92AD28A-4 (12461-SD) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 29'43: N., Long. 158 deg. 35'00" W. Skeletal lime grainstone lenses containing crinoid ossicles. Thin section is crinoidal pack/gainstone with brachiopod and coral fragments, ostracodes, and minor carbonate intraclasts; many bioclasts are micritized. Collected from unnamed Devonian limestone, 18 m stratigraphically below 92AD28A-22. (description from Dover et al., 2004, p. 44 (Table 1)); [Howard Pass B-5. 68°29'43", 158°35'00". Skeletal lime grainstone lenses with crinoids. Collected from unnamed Devonian limestone, 18 m stratigraphically below 92AD28A-22.
From same locality as 92 AD28A-22. (from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

8 Belodella sp. elements

5 Neopanderodus sp. elements

1 Pa element Polygnathus linguiformis linguiformis Hinde epsilon morphotype

10 Pa elements Polygnathus parawebbi Chatterton

Polygnathus spp. indet., 23 Pa and 4 M elements

Unassigned elements: 8 Pb (3 morphotypes), 1 Sa, 1 Sb and 9 Sc (3 morphotypes)

70 indet. bar, blade, and platform fragments

1 phosphatized gastropod steinkern

92AD29-8 (12462-SD) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 29'43" N., Long. 158 deg. 35'00" W. Sandy(?) dolostone interlayered with chert bands. Thin section is dolostone containing rare relict crinoid ossicles and thin phosphatic shells; dolomite crystals less than or equal to 120 microns. Collected from unnamed Devonian limestone, at least 12 m stratigraphically below 92AD28A-4. (description from Dover et al., 2004, p. 44 (Table 1)); [Howard Pass B-5. 68°29'43", 158°35'05". Sandy(?) dolostone with chert bands. Collected from unnamed Devonian limestone, at least 12 m stratigraphically below 92AD28A-4.
Collected between 92AD44D and 92AD45 on north-south segment of NW-trending ridge, ~1.75 miles due east of Wager Creek, ~0.5 mile due west of the headwaters of Twistem Creek, western Brooks Range; N. part sec. 13, T. 11 S., R. 29 W. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

3 Belodella sp. elements

Polygnathus linguiformis linguiformis Hinde, 7 Pa, 2 Pb, 3 M, 1 Sa and 1 SB elements

41 indet. bar, blade, and platform fragments

92AD30B (11949-SD, also 12463-SD) , Howard Pass , Sample collected on E-W segment of ridge. Partly silicified brachiopod lime packstone. (description from Blodgett E&R report of 5/3/94)[Howard Pass B-5. Lat. 68 deg. 29'43" N., Long. 158 deg. 34'00" W. Partly silicified brachiopod packstone. Thin section is brachiopod packstone containing crinoid ossicles and gastropods; many bioclasts silicified and matrix largely dolomitized. Collected from unnamed Devonian limestone, about 10 m above 92AD28A-4. Brachiopods of early Eifelian age collected from this locality (see table 3). Heavy-mineral concentrate includes 7 gastropod, 1 ostracode, and 3 tentaculitid phosphatized steinkerns. (description from Dover et al., 2004, p. 45 (Table 1))]; [Howard Pass B-5. 68°29'45", 158°35'10". Partly silicified brachiopod packstone. Collected from unnamed Devonian limestone, about 10 m above 92AD29-8 and slightly lower(?) than 28A-4.
Collected to the west of 92AD28A-4 and -22. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3).]

Polygnathus linguiformis linguiformis Hinde gamma morphotype, 3 Pa, 1 Pb, 1 M, and 1 Sc elements

3 Pa element fragments Polygnathus sp. indet.

10 indet. bar, blade, and platform fragments

92AD26D (32431-PC) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 29.6' N., Long. 158 deg. 35.1' W. Probably turbidite; 10-cm-thick, paralle; and cross-laminated, light- to medium-gray-weathering (locally yellow-tan), dark-gray limestone intercalated with black mudstone and chert. Thin section is laminated spiculite that contains roughly equal amounts of calcareous and siliceous spicules. Collected approx. 1.5 m above base of outcrop and 15 m below mafic sill. Heavy-mineral concentrate: chiefly fused clusters of spines and (or) spicules with druses of phosphate. (description from Dover et al., 2004, p. 45 (Table 1)); [Howard Pass B-4. 68°29.57', 158°35.17'. Probable turbidite; 10 cm-thick, parallel and cross laminated, dark-gray, light to medium gray-weathering (locally yellow-tan) limestone intercalated with black mudstone and chert.
Collected as "Ipnavik facies" of Lisburne Group, ~1.5 m above base of outcrop and 15 m below mafic sill.
Collected ~4000 ft. (~ 1250 m) elevation on north side of hill 1301 m, ~1.5 miles due east of Wager Creek and ~0.5 mile west of headwaters of Twister Creek, NE1/4 sec. 13, T. 11 S., R. 29 W. (from Harris E&R report dated March 17, 1995)]

2 Pb and 1 Sc elements Bactrognathus? sp. indet.

3 Pa elements Hindeodus crassidentatus (Branson and Mehl)

1 unassigned Sc element

23 indet. bar, blade, and platform elements

92AD69B (12468-SD) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 24'40" N., 158 deg. 54'00" W. Massive, unbedded, crinoidal lime wacke/packstone with stromatoporoids. Thin section is partly dolomitized stromatoporoid wackestone; subordinate bioclasts include crinoid ossicles and brachiopod fragments. Collected from isolated outcrop (fault block?) topographically (and stratigraphically?) below 92AD68C. Table 3 contains megafossil data from this locality. (description from Dover et al., 2004, p. 45 (Table 1)); [Howard Pass B-5. 68°24'40", 158°54". Massive, unbedded, crinoidal lime wacke-packstone with stromatoporoids. Collected from isolated outcrop (fault block?) topographically (and stratigraphically?) below 92AD68C.
From same locality as above ("referring to 92AD68C") except collected ~ 1/10 mile east of 82AD68C. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

2 P elements Icriodus symmetricus Branson and Mehl

8 Pa elements (incomplete) Polygnathus dubius Hinde

10 Pa element fragments Polygnathus sp. indet.

Unassigned elements: 4 Pb (2 morphotypes), 3 M, 1 Sb, and 3 Sc (2 morphotypes)

56 indet. bar, blade, platform, and coniform fragments

92AD70A (12469-SD) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 24'47" N., Lat. 158 deg. 53.30" W. Sample from 25-cm-thick bed of very sooty, fossiliferous (sparse crinoids and gastropods) micritic limestone with limy shale partings. Thin section is lime mudstone containing sparse, 2-mm-thick laminae of skeletal wacke/packstone; bioclasts include crinoid ossicles and calcareous sponge spicules. Collected approx. 4 m above base of approx. 10-m-thick outcrop of unnamed Devonian unit. Lithology is similar and age is equivalent to that at 92AD28A (loc. 74). Heavy-mineral concentrate includes phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 46 (Table 1)); [Howard Pass B-5. 68°24'48", 158°53'55". 25-cm-thick bed of very sooty, fossiliferous (sparse crinoids and gastropods) micritic limestone with limy shale partings. Collected ~4 m above base of ~10-m-thick outcrop of unnamed Devonian unit. Lithology (and age?) = ~92AD28A section.
Collected on east side of Buccaneer Creek Creek, ~1/2 mile north of junction of Buccaneer Creek and unnamed tributary and 2 1/4 miles south of hill 705 m, western Brooks Range. (description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-3)]

4 Belodella devonica (Stauffer) elements

1 Dvorakia sp. element

20 juvenile to gerontic Pa elements Polygnathus linguiformis linguiformis Hinde gamma morphotype

22 juvenile to subadult Pa elements Polygnathus parawebbi Chatterton

Polygnathus spp. indet., 33 Pa (fragments), 27 Pb, 12 M, 4 Sa, 33 Sb (2 morphotypes), and 15 Sc (2 morphotypes)

+100 indet. long bar and blade fragments

92AD214-1.5 (32463-PC) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23'10" N., Long. 158 deg. 54'00" W. Samples at this locality from approx. 85-m-thick measured section of unit Mlri. Section consists of interbedded limestone turbidites and shale (0-47 m), mostly shale (47-60 m), and mostly chert (60-85 m). Turbidites here are similar to those in the Mlri unit in the Howard Pass C-3 quadrangle, 30 mi to the east, but background sediment here is more shaly and less cherty than to the east. Sample 92AD214-1.5 is from 1.5 m above base of section. Sample is fine-grained limestone; 8-cm-thick, parallel- and cross-laminated turbidite that has a scoured base and contains disseminated pyrite. Thin section is very fine-grained, cross-bedded, calcite-cemented quartz-carbonate sandstone. Quartz grains (20-50 percent of slide) are angular, chiefly 40-90 microns in diameter. Carbonate clasts include crinoid ossicles and sponge spicules. (description from Dover et al., 2004, p. 46 (Table 1)); [Howard Pass B-5. 68°23'13", 158°54'40". Fine-grained limestone containing 8-cm-thick, parallel- and cross-laminated turbidites with scoured base and disseminated pyrite. Collected as Osagean "Ipnavik facies" of the Lisburne Group. "Ipnavik facies" in the Howard Pass C-3 quadrangle, 30 miles to the east, are mostly (all?) middle Osagean and the "turbidites" have similar lithology in both areas, but background sediment here is more shaly and less cherty than to the east. 92AD214-1.5 is 1.5 m above base of section.
Collected at stream bank section on southwest side of Buccaneer Creek, 2 1/4 mile due west of Primus Creek and ~2 miles north of junction of Primus and Buccaneer creeks, northwest area; center sec. 22, T. 12 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

1 juvenile Pa element Bispathodus utahensis Sandberg and Gutschick

4 indet. bar fragments

92AD214-18.5 (32464-PC) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23'10" N., Long. 158 deg. 54'00" W. Lithology similar to 92AD214-1.5, but collected from a fetid, 40-cm-thick graded bed, a few meters below mafic dike and 18.5 m above base of approx. 85-m-thick measured section. Thin section is normally graded, parallel-laminated, quartz-carbonate sandstone cemented with calcite. Quartz grains (20-30 percent of slide) are angular, chiefly 60-90 microns in diameter. Carbonate clasts include crinoid ossicles and sponge spicules (some spicules partly pyritized). (description from Dover et al., 2004, p. 46 (Table 1)); [Howard Pass- B-5. 68°23'13", 158°54'00". Has similar lithology to 92AD214-1.5, but collected from a fetid, 40-cm-thick bed, a few meters below mafic dike.
From same locality as above ("referring to 92AD214-1.5"). (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

1 juvenile Pa element Bactrognathus? sp.

2 Pa elements Doliognathus latus Branson and Mehl

8 bar fragments "Hindeodella" segaformis Bischoff s.f.

5 Pa elements Polygnathus communis communis Branson and Mehl

3 Pa element fragments Scaliognathus? sp. indet.

Unassigned elements: 7 M and 2 Sa

40 indet. bar, blade, and platform fragments

92AD214-44 (32465-PC) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23'10" N., Long. 158 deg. 54'00" W. Similar lithology to 92AD214-1.5, but collected from a 20-cm-thick bed scoured into black fissile shale; sample taken 44 m above base of approx. 85-m-thick measured section. Thin section is fine- to medium-grained skeletal grainstone, cemented chiefly with calcite but locally with chert. Diverse bioclasts include crinoid ossicles (20-50 percent of bioclasts), foraminifers (5-10 percent), ostracodes, brachiopods, and echinoid spines. Some bioclasts are micritized; others are partly or completely replaced by silica or pyrite. Minor brown mud clasts and <1 percent disseminated quart silt. Base of grainstone beds is scoured into dark brown shale containing 5-10 percent disseminated quartz silt. Heavy-mineral concentrate includes a pyritized ostracode steinkern. (description from Dover et al., 2004, p. 47 (Table 1)); [Howard Pass B-5. 68°23'13", 158°54'00". Has similar lithology to 92AD215-1.5, but collected from a 20-cm-thick bed scoured into black, fissile shale.
From same locality as above ("referring to 92AD215-1.5 and -18.5"). (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

13 Pa elements Bispathodus utahensis Sandberg and Gutschick

1 subadult Pa element Gnathodus typicus Cooper

5 bar fragments "Hindeodella" segaformis Bischoff s.f.

12 Pa elements Mestognathus praebeckmanni Sandberg, Orchard, and von Bitter

5 Pa elements Polygnathus communis communis Branson and Mehl

2 subadult Pa elements Pseudopolygnathus sp. indet.

2 Pa element fragments Geniculatus claviger Hass

1 Pa element Synclydognathus geminus (Hinde)

Unassigned elements: 9 Pb (4 morphotypes), 6 M (2 morphotypes), 2 Sb, and 7 Sc (6 morphotypes)

66 indet. bar, blade, and platform fragments

92ARm37B (32471-PC) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23'30" N., Long. 158 deg. 48'55" W. Light-gray limestone interbedded with black and gray chert. Heavy-mineral concentrate includes phosphatized composite grains and bioclasts and phosphatic brachiopod fragments. (description from Dover et al., 2004, p. 47 (Table 1)); [Howard Pass B-5. 68°23'32", 158°48'55". Light-gray limestone interbedded with black and grey chert. Submitted as Ipnavik facies of the Lisburne(?) Group.
Collected at -480 m elevation, -1/3 mile west of Primus Creek, and -3/4 mile north (and slightly east) of 92ARM31C; NW1/4 NW1/4 sec. 24, T. 12 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

20 Pa elements Bispathodus utahensis Sandberg and Gutschick

1 Pa element Geniculatus claviger Hass

11 Pa elements (all growth stages) Gnathodus semiglaber (Bischoff)

1 small bar fragment "Hindeodella" segaformis Bischoff s.f.

5 Idioprioniodus sp. indet. element fragments

1 juvenile Pa element Pseudopolygnathus sp.

Unassigned elements: 2 M and 1 Sc

110 indet. bar, blade, and platform fragments

92ARm31C (32470-PC) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23' N., Long. 158 deg. 49'40" W. Platy limestone. Heavy-mineral concentrate includes phosphatized and (or) pyritized bioclasts and grains, and rare phosphatized gastropods. (description from Dover et al., 2004, p. 48 (Table 1)); [Howard Pass B-5. 68°22'58", 158°49'32". Platy limestone. Submitted as Ipnavik facies of the Lisburne(?) Group.
Collected at -460 m of elevation, -1/3 mile west of Primus Creek and - 1 1/2 miles north of junction of Primus and Buccaneer creeks; SE1/4 SW1/4 sec. 24, T. 12 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment no. A-95-3)]

2 Pa elements Bispathodus utahensis Sandberg and Gutschick

3 Pa element fragments Doliognathus latus Branson and Mehl

17 small bar fragments "Hindeodella" segaformis Bischoff s.f.

6 Pa elements Polygnathus communis communis Branson and Mehl

3 Pa element fragments Geniculatus claviger Hass

Unassigned: 3 Pb (2 Osagean morphotypes), 9 M, and 2 Sc

151 indet. bar, blade, and platform fragments

92AD25E (12458-SD) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 21'00" N., Long. 158 deg. 16'15" W. Nodular, 1- to 2-cm-thick beds of fine-grained skeletal lime wackestone. Thin section is skeletal wacke/packstone; diverse bioclasts include crinoid ossicles (to 3 mm in diameter), various types of algae (including Girvanella sp.), ostracodes, gastropods, calcispheres, echinoid spines, and fragments of stromatoporoids, bryozoans, and trilobites. Matrix is peloidal and locally dolomitized, and contains minor detrital quartz and altered volcanic(?) lithic clasts. Collected from a discrete approx. 10 x 20 m block of unnamed Devonian limestone within Copter Peak basalt unit of Siniktanneyak mafic complex. Corals and stromatoporoids of Frasnian age were previously reported from this locality (table 4; fossil loc. 6 of Nelson and Nelson, 1982). (description from Dover et al., 2004, p. 48 (Table 1)); [Howard Pass B-4. 68°21'04", 158°16'20". Nodular, 1-2 cm-thick beds of fine-grained skeletal lime wackestone.
Collected from a discrete ~ 10 m x 20 m block of unnamed Devonian limestone rocks depositionally(?) associated with Siniktanneak mafic complex.
Collected from southwest side of unnamed tributary to and ~ 1.5 miles northwest of Makpik Creek, and ~3 miles northeast of Siniktanneak Mountain, western Brooks Range; sec. 19, T. 34 N., R. 3 E. (from Harris E&R report dated March 17, 1995; Shipment A-95-3 and Harris E&R report dated Jan. 25, 1995, Shipment A-95-3a)]

1 posterior Pa element fragment Ancyrodella sp. indet.

2 Belodella sp. indet. elements

1 Pa element Palmatolepis hassi Mueller and Mueller?

Palmatolepis spp. indet., 5 Pa and 2 Pb element fragments

1 Pa element fragment Polygnathus aff. P. evidens Klapper and Lane

39 Pa elements Polygnathus pacificus Savage and Funai

27 Pa element fragments Polygnathus spp. indet.

Unassigned elements: 3 Pb (2 morphotypes), 8 M (4 morphotypes), 1 Sa, and 3 Sc (2 morphotypes)

104 indet. bar, blade, and platform fragments

11 conodont pearls

78Cx27A1 , Howard Pass , From lat. 68 deg. 21 min. 12 sec., long. 158 deg. 17 min. 00 sec., Howard Pass quad. (description from Harris E&R report of 3/7/79) [Howard Pass B-4. Lat. 68 deg. 21'00" N., Long. 158 deg. 16'15" W. Collected from discrete carbonate block within Copter Peak basalt unit, slightly northwest of 92AD25E (description from Dover et al., 2004, p. 48 (Table 1))]

1 Belodella resima (Philip)

8 conodont pearls

92AD25H (12459-SD) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 20'56" N., Long. 158 deg. 16'00" W. Massive, stromatoporoid-crinoidal lime packstone. Thin section is skeletal packstone containing <1 percent angular quartz silt; diverse bioclasts include crinoid ossicles, stromatoporoid fragments and algae(?). Collected from a discrete approx. 10 x 20 m block of unnamed Devonian limestone within Copter Peak basal unit of Siniktanneyak mafic complex. Conodonts of Late Devonian age previously reported from this locality (table 4; fossil locality 7 of Nelson and Nelson, 1982). (description from Dover et al., 2004, p. 49 (Table 1)); [Howard Pass B-4. 68°20'58", 158°16'00". Massive, stromatoporoid-crinoidal lime packstone.
Collected from a discrete ~ 10 m x 20 m block of unnamed Devonian rocks depositionally(?) associated with Siniktanneak mafic complex.
From same locality as above ("referring to 92AD25E"). [description from Harris E&R reports dated Jan. 25, 1995 (Shipment no. A-95-3a) and March 17, 1995 (Shipment no. A-95-30)]

1 posterior Pa element fragment Ancyrodella sp.indet.

1 Pa element fragment Polygnathus sp. indet.

6 indet. bar, blade, and platform fragments

92AD35C-15.5 (32442-PC) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 20'00" N., Long. 157 deg. 44'35" W. Sample from 80 x 45 cm concretion of fine-grained, sooty, fetid, black, medium-gray-weathering limestone (calcified radiolarite?). Thin section is calcareous radiolarian packstone; radiolarian tests (50-80 percent of slide; replaced and filled with polycrystalline calcite) and lesser calcareous sponge spicules in a matrix of brown, fine-crystalline calcite. Collected from 15.5 m above base of approx. 68 m-thick section of Kuna Formation at type locality (as designated in Mull and others, 1982); section is mostly silicified mudstone and <10 percent limestone. (description from Dover et al., 2004, p. 49 (Table 1));
[Howard Pass B-3. 68°20'00', 157°44'30". 80 x 40 cm concretion of fine-grained, sooty, fetid, black, medium gray-weathering limestone (calcified radiolarite?). Collected from 15.5 m above base ~68 m-thick type section of Kuna Fm. which is mostly silicified mudstone and <10% limestone.
Collected at ~800 m elevation, ~ 1/4 mile west of 92AD35A section on north side of small tributary to Safari Creek, ~1 mile southeast of hill 950 m and ~2.75 miles due west of headwaters of Ipnavik River, NW1/4 sec. 21, T. 34 N., R. 5 E. (description from Harris E&R report dated March 17, 1995)]

3 Pa elements Bispathodus utahensis Sandberg and Gutschick

2 Pa elements Gnathodus cuneiformis Mehl and Thomas

2 Pa elements Polygnathus communis communis Branson and Mehl

Scaliognathus anchoralis Branson and Mehl, 30 M, 3 Sc, and 35 S element bar fragments

1 digyrate Pb element

Unassigned elements: 20 Pb (+4 morphotypes), 5 Sa (2 morphotypes), 7 Sb (2 morphotypes), and 16 Sc (2 morphotypes)

+130 indet. bar, blade, and platform fragments

92AD35C-62 (31782-PC) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 20'02" N., Long. 157 deg. 44'32" W. Fine-grained, dark-gray to black, locally burrowed(?) limestone rubble (possible concretion). Thin section is dark, very fine grained carbonate containing rare, calcite-replaced radiolarians and locally abundant brown clasts of noncalcareous mud. Collected 62 m above base of section and 46.5 m above 92AD35C-15.5; [Howard Pass B-3. 68°20'02", 157°44'32". Fine-grained, dark-gray to black, locally burrowed(?) limestone rubble (possible concretion?).
Collected 62 m above base of section and 46.5 m above 92AD35C-15.5.
From same locality as above ("referring to 92AD35C-15.5"). (description from Harris E&R report dated March 17, 1995)].

Bispathodus utahensis Sandberg and Gutschick, 9 Pa, 1 Pb, 1 M, and 1 Sc elements

1 Pa element Gnathodus pseudosemiglaber Thompson and Fellows (figured in Dumoulin and others, 1994, fig. 3H)

68 indet. bar, blade, and platform fragments

92AD35AA (32441-PC) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 19'15" N., Long. 157 deg. 44'10" W. Sample from 4- to 10-cm-thick beds of dark- to medium-dark-gray limestone (calcitized radiolarite?). Thin section is dark, finely intergrown carbonate and silica containing locally abundant brown clasts of noncalcareous mud and scattered, variously preserved radiolarians (some calcite replaced, some pyritized, and some filled with chalcedony). Collected at type locality of Kuna Formation (as designated in Mull and others, 1982); from small outcrop at stream level approx. 15 m west and 12 m topographically lower than base of 92AD35A measured section. If 92AD35AA strata are in place, they are the lowest exposure at the type locality. (description from Dover et al., 2004, p. 50 (Table 1));
[Howard Pass B-3. 68°12'30", 157°44'10". 4-10 cm-thick beds of dark- to medium-dark-gray limestone (calcitized radiolarite?). Collect type section (as designated in 1982 AAPG Bulletin article) of Kuna Fm. of Lisburne Group; from small outcrop right at stream level ~15 m west and 12 m topographically lower than base of 92AD35A measured section (if it is in place, it is the lowest part of section).
Collected from north side of unnamed tributary at headwaters of Safari Creek. ~ 1/3 mile east of main branch of creek and ~2.5 miles west of headwaters of Ipnavik River; NW1/4 sec. 21, T. 34 N., R. 25 W. (description from Harris E&R report dated March 17, 1995)]

Bispathodus utahensis Sandberg and Gutschick (juveniles and adults), 12 Pa, 2 Pb, 7 M, 1 Sa, 3 Sb, and 14 Sc elements

30 Pa elements (adults and juveniles) Gnathodus semiglaber Bischoff

20 bar fragments (moderately long) "Hindeodella" segaformis Bischoff s.f.

Digyrate apparatus elements: 2 Pa (2 morphotypes), 1 Pb, 1 M, 1 Sa, 2 Sc

Unassigned elements: 1 Pa fragment, 19 Pb (+4 morphotypes), 4 M (2 morphotypes), 3 Sa, and 5 Sc

70 indet. bar, blade, and platform fragments

92AD35A-9A (31781-PC) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 19'15" N., Long. 157 deg. 44'10" W. Sample from 40 x 90-cm concretion of black limestone (calcitized radiolarite?) in fissile black shale. Thin section is calcareous radiolarian packstone; radiolarian tests (replaced and filled with calcite), lesser calcareous sponge spicules, and locally abundant brown clasts of mud and phosphate in a matrix of brown mud. Radiolarians and spicules make up approx. 70-80 percent of slide. Collected 9 m above base of 25-m-thick partial section (92AD35A) of Kuna Formation at type locality. Some conodonts from this sample are figured and described in Dumoulin and others (1994, fig. 3C-G). (description from Dover et al., 2004, p. 50 (Table 1));
[Howard Pass B-3. 68°12'30", 157°44'10". 40 x 90 cm concretion of black limestone in fissile black shale (calcitized radiolarite?). Collected 9 m above base of 35AA measured section at type Kuna Fm. section.
Some conodont from this sample are described in Dumoulin and Harris (1993).
From same locality as above ("referring to 92AD35AA"). (description from Harris E&R report dated March 17, 1995)]

Bispathodus utahensis Sandberg and Gutschick, 6 Pa, 3 Pb, and 1 M elements

3 Pa elements Doliognathus latus Branson and Mehl morphotype 3

2 Pa elements Gnathodus sp. indet.

9 Pa elements Polygnathus communis communis Branson and Mehl

1 Pa element Protognathodus cordiformis Lane, Sandberg, and Ziegler

Scaliognathus anchoralis Branson and Mehl, 4 Pa, 54 M, and 174 Sa, Sb, and Sc (moderate to very long bar fragments) elements

Unassigned elements: 69 Pb (+4 morphotypes), 2 Sb, and 1 Sc

22 indet. bar, blade, and platform fragments

92AD51E (DR 1521) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 44'50" N., Long. 158 deg. 55'20" W. White-weathering, gray chert, 1 m below(?) mafic sill. In thin section, chert is fine-grained and pale gray, with 5-25 percent radiolarians; tests chiefly filled with chalcedony or, less commonly, opaque material. (description from Dover et al., 2004, p. 51 (Table 2)); [Formation: Possible Otuk facies -- Triassic Pc. USGS Howard Pass 1:250,000 C5 quadrangle, T. 8 S., R. 30 W., sec. 19; NE side of NE-trending rise at elevation 740 m; approx. 2.0 mi west of Jubilee Creek and 3.0 mi north of confluence of Jubilee and Rampart Creeks; same locality as 92AD51I. Lat 68°44'50", long 158°55'30". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Albaillella sp. aff. A. cartalla (fragments only)

Belowea sp.

Scharfenbergia concentrica

Scharfenbergia sp. aff. S. ruestae

92AD51I (DR 1522) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 44'50" N., Long. 158 deg. 55'20" W. A 5-cm-thick layer of light-gray to light-green chert, within an interval of red chert; approx. 13 m stratigraphically below(?) 92AD51E. In thin section, chert is pale-gray and very fine grained, and contains abundant radiolarians; tests filled with coarser crystalline quartz or chalcedony. (description from Dover et al., 2004, p. 51 (Table 2)); Formation: Possible Siksikpuk facies - Triassic Pc. [USGS Howard Pass 1:250,000 C5 quadrangle, T. 8 S., R. 30 W., sec. 19; NE side of NE-trending rise at elevation 740 m; approx. 2.0 mi west of Jubilee Creek and 3.0 mi north of confluence of Jubilee and Rampart Creeks; same locality as 92AD51E. Lat 68°44'50", long 158°55'30". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Belowea sp.

Scharfenbergia impella group (usage of Holdsworth and Murchey, 1988)

Scharfenbergia sp. cf. S. tailleurense

92ADo201 (DR 1473) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 38'20" N., Long. 158 deg. 57'40" W. Black chert, locally orange-weathering. (description from Dover et al., 2004, p. 51 (Table 2)); [Formation: Mlc -- "Halloween Chert" of Tailleur?? USGS Howard Pass 1:250,000 C5 quadrangle, T. 9 S., R. 30 W., summit "902" in sec. 29, approximately 0.9 mi east of west edge of Howard Pass quadrangle, and 1.33 mi west of Rampart Creek from a point approx. 1 mi north of its main forks. Lat 68°38'22", long 158°57'45". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Scharfenbergia impella group

Scharfenbergia sp. cf. S. ruestae Won

Abundant sponge spicules

92AK22a (DR 1586) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 39'08" N., Long. 158 deg. 54'35" W. Chert, greenish gray, locally baritic, very thin and crumpled lens, thicker bedded; some small radiolarians (description from Dover et al., 2004, p. 51 (Table 2))

Numerous robust-spined, bipolar radiolarians

Abundant spicules (some robust stauracts or hexactines) visible on etched surfaces

Bipolar spines exhibit an internal spicule that extends to the internal shell. Slight torsion of spines suggests Pseudostylosphaera japonica (Nakaseko and Nishimura)

Eptingium sp. (possibly E. manfredi Dumitrica)

A nassellarian that strongly resembles Triassocampe (possible T. scalaris Dumitrica, Kozur and Mostler)

Several others nassellarians; in one, the apical chamber was swollen, wider than the upper chambers

Sarla kretaensis Kozur and Krahl

92AK22b (DR 1587) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 39'08" N., Long. 158 deg. 54'35" W. Chert, greenish gray, very thin and crumpled lens, thicker bedded; some small radiolarians. Sample from bank about 10 m to east of 92AK22a; chert is rusty weathering, and contains siliceous shale interbeds and no barite. (description from Dover et al., 2004, p. 51 (Table 2))

Etched surface shows numerous heavy grooved spines and large bipolar forms. The sample is a radiolarite that also contains abundant sponge spicules.

Eptingium manfredi Dumitrica

Triassistephanidium laticorne Dumitrica

Pseudostylosphaera compacta (Nakaseko and Nishimura) (polar spines lacking torsion)

92ADo297A (DR 1485) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 39'00" N., Long. 158 deg. 51'20" W. Gray, translucent, thin-bedded chert that contains thin argillite partings. (description from Dover et al., 2004, p. 51 (Table 2)); [Formation: Pennsylvanian-Permian? or Triassic? -- not sure -- Triassic Otuk, or older Pennsylvanian-Permian chert. USGS Howard Pass 1:250,000 C5 quadrangle,T. 9 S., R. 30 W., sec. 23, north edge of ridge, approximately 1.5 mi east of Rampart Creek; measured from east tributary 4 mi from the confluence of Rampart and Jubilee Creeks. Lat 68°39'02", long 158°51'22". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Betraccium cf. B. deweveri Blome

?Livarella sp. (casts)

?Pseudoheliodiscus sp. (broken cortical ring)

Saitoum sp. (broken)

92ADo275A (DR 1482) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 39'10" N., Long. 158 deg. 45'50" W. Medium- to dark-gray, thin- to thick-bedded chert containing abundant carbonate interbeds. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Ml -- possible Lisburne chert? USGS Howard Pass 1:250,000 C5 quadrangle,T. 9 S., R. 29 W., small ridge near boundary between sections 18 and 19 about midway between Rampart and Rolling Pin Creeks; at summit 835, approx. 0.125 mi SE of locality 92ADo274A. Lat 68°39'15:, long 158°46'00". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including ?Belowea sp. (fragments)

?Palaeoxyphostylus sp. (robust spines only)

Scharfenbergia impella group (flattened and distorted tests of younger morphotypes)

92ADo272A (DR 1480) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 38'06" N., Long. 158 deg. 42'30" W. Sample of chert that underlies zone of reddish cherty argillite; some light-weathering bedding surfaces have radiolarians. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Mississippian-Pennsylvanian?? -- underlies red bed (Ps = Siksikpuk?) zone. Howard Pass 1:250,000 C5 quadrangle, T. 9 S., R. 29 W., sec. 28, small summit approximately 1 mi NW of Rolling Pin Creek, in section 28. Lat 68°38'09", long 158°42'32". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Albaillella sp. (one broken short-bodied test)

Scharfenbergia impella group (flattened and distorted tests)

Robust sponge spicules

92ABs180B (DR 1506) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 37'50" N., Long. 158 deg. 52'40" W. Sample from an interval of unit JlPip too small to shown geologic map; sample is greenish gray chert that overlies unit lPMap. Conodonts (table 1) from dolostone layers in unit lPMap at this locality are Mississippian. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Mississippian-Triassic -- uncertain, Etivluk Gp? USGS Howard Pass 1:250,000 C5 quadrangle, T. 9 S., R. 30 W., sec. 26; on ridge approx. 0.5 mi NE of place where Rampart Creek splits into 3 forks, at summit 881; same locality as 92ABs180C and -180D. Lat 68°37'47", long 158°52'40". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including medial and distal parts of spines questionably belonging to ?Capnuchosphaera sp. ....

.... and (or) ?Icrioma sp.

92ADo226B (DR 1477) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 37'30" N., Long. 158 deg. 51'50" W. Grayish-green chert and cherty argillite; fairly radiolarian-rich. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Pennsylvanian-Triassic -- Etivluk? Howard Pass 1:250,000 C5 quadrangle, T. 9 S., R. 30 W., sec. 35; on low ridge 1 mile east of where tributaries of Rampart Creek converge, approx. 250 ft west of locality 92ADo225B. Lat. 68°37'34", long 158°51'50". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including ?Eptingium sp. (heavy triradiate spine fragments).

Triassocampe sp. (casts with little ornamentation)

92ADo225B (DR 1476) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 37'30" N., Long. 158 deg. 51'40" W. Sample from top of black, locally orange-weathering chert unit, just below contact with red chert and argillite of unit PlPs. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Pennsylvanian-Permian?? -- stratigraphigraphically just below?? red Ps?? argillite and chert. USGS Howard Pass 1:250,000 C5 quadrangle, T. 9 S., R. 30 W., sec. 35; on low ridge 1 mi east of where Rampart Creek tributaries converge. Lat 68°37'34", 158°51'41". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including Scharfenbergia impella group

Scharfenbergia tailleurense Holdsworth and Murchey

Abundant twisted, bladed spines

92ADo194B (DR 1472) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 34'50" N., Long. 158 deg. 55'55" W. Radiolarian-rich, medium-gray- to tan-weathering, predominantly cherty rocks; tan color may reflect bleaching and alteration. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Mississippian-Triassic?? Etivluk Gp?, Otuk? USGS Howard Pass 1:250,000 C5 quadrangle, T. 10 S., R. 30 W., sec. 16; on ridge crest between two western of the forks of upper Rampart Creek, approximately 1.5 mi east of the west edge of the Howard Pass quadrangle. Lat 68°34'50", long 158°56'00".(description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including Capnuchosphaera sp. (tumidaspine fragments only)

?Pseudoheliodiscus sp. (cortical ring fragments)

92ABs172 (DR 1504) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35'55' N., Long. 158 deg. 48'00" W. Light-greenish-gray chert abundantly stained with iron-oxide; underlies Otuk Formation. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Mississippian-Triassic -- lower? Etivluk. USGS Howard Pass 1:250,000 C5 quadrangle, T. 10 S., R. 30 W., sec. 1; on ridge 0.33 mi east of the easternmost fork of upper Rampart Creek and 0.75 mi south of hill 883. Lat 68°35'57", long 158°48'04". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including ?Latentifistula sp. (recrystallized central portions)

?Nazarovella sp. (guttered arms only)

Pseudotormentus sp. (Y-shaped central part and arms)

Abundant recrystallized spumellarians with no external meshwork

Large sponge spicules

92ABs181A (DR 1509) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35'30" N., Long. 158 deg. 48'05" W. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Mississippian-Triassic -- uncertain, Etivluk? USGS Howard Pass 1:250,000 C5 quadrangle, T. 10 S., R. 30 W., sec. 12; on low divide between Rampart and Rolling Pin Creeks, approximately 1.25 mi south of hill 883 and 0.5 mi south of locality 92ABs172. Lat 68°35'33", long 158°48'09". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Eptingium manfredi manfredi (partial test and spines)

Plafkerium sp. cf. P. firmum

Pseudostylosphaera coccostyla

Triassocampe sp. aff. T. deweveri

Triassocampe sp.

92ABs181B (DR 1510) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35'30" N., Long. 158 deg. 48'05" W. (description from Dover et al., 2004, p. 52 (Table 2)); [Formation: Mississippian-Triassic--uncertain, Etivluk? USGS Howard Pass 1:250,000 C5 quadrangle, T. 10 S., R. 30 W., sec. 12; on low divide between Rampart and Rolling Pin Creeks, approximately 1.25 mi south of hill 883 and 0.5 mi south of locality 92ABs172. Lat 68°35'33, long 158°48'09". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Capnodoce sp. aff. C. baldiensis Blome

?Pseudostylosphaera sp. (partial tests)

Abundant casts of Triassocampe spp.

92ATr38A (DR1583) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35' N., Long. 158 deg. 43.5' W. Rubble and subcrop of thick-bedded black chert. (description from Dover et al., 2004, p. 53 (Table 2))

Bipolar (two-spine forms)

Incomplete robust tests (granular)with ?bifurcating points; also isolated, heavily grooved spines

Unidentifiable entactiniids

92ATr38C (DR 1585) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 34'55" N., Long. 158 deg. 43'15" W. Chert rubble, just below subcrop contact with Monotis-bearing limestone (description from Dover et al., 2004 p. 53 (Table 2))

Etched surface--granular, with pits and rare casts and molds of spumellarians; no spines seem be connected to thse "molds", spicules are abundant. The +80 fraction mostly composed of flakes (veinlets), a few coarse-meshed spumellarian fragments preserved

Fragment of a nassellarian that has costae resembling those of Corum Blome

Several broken spines assignable to Capnuchosphaera De Wever

A few Khalerosphaera spine fragments

Heavy grooved spines

A non-age diagnostic and poorly preserved conodont fragment

92ADo264B (DR 1479) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 36'15" N., Long. 158 deg. 37'55" W. Grayish-green chert, just below contact with Monotis-bearing limestone (description from Dover et al., 2004, p. 53 (Table 2)); [Formation: Triassic?? -- Otuk?, just below contact with Monotis limestone. Howard Pass 1:250,000 C5 quadrangle, T. 10 S., R. 29 W., sec. 2; on ridge summit 1.5 mi WNW of confluence of Drenchwater and Wager Creek. Lat. 68°36'18', long 158°37'55". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including ?Canoptum sp. (casts only)

?Capnuchosphaera sp. (tumidaspine fragments)

Triassocampe sp.

92ADo283A (DR 1484) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 37'01" N., Long. 158 deg. 35'05" W. Rubble of medium-gray to grayish-green chert; locally orange-weathering, covered with black lichen and containing abundant radiolarians. No limestone interbeds. (description from Dover et al., 2004, p. 53 (Table 2)); [Formation: Triassic -- Otuk?? USGS Howard Pass 1:250,000 C5 quadrangle, T. 9 S., R. 29 W., sec. 36; approx. 0.75 mi SE of hill 951 and 1.33 mi north of confluence of Drenchwater and Wager Creeks. Lat 68°37.02", long 158°35'09". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including ?Belowea sp. (fragments).

Scharfenbergia impella group (sensu Won)

Poorly preserved undescribed spumellarians

Rare sponge spicules

92AD59G (DR 1524) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 35'45" N., Long. 158 deg. 27'20" W. Light-gray chert that contains few to 25 percent radiolarians; local green-weathering laminae. Thin section is light-brown, fine-grained chert with thin laminae of dark-brown mud and 10-20 percent spicules and radiolarians. Conodonts (table 1) from limestone immediately underlying the chert at this locality are Mississippian (probably late Osagean) (description from Dover et al., 2004, p. 53 (Table 2)); [Formation: Triassic-Pc overlying Kuna. USGS Howard Pass 1:250,000 C5 quadrangle, T. 10 S., R. 28 S., sec. 9; small knob at elevation 660 m+ and 1.5 mi east of main fork of the Kiligwa River and 1.5 mi SE of the junctgion of the Kiligwa River and Drenchwater Creek. Lat 68°35'48", long 158°27'25". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including broken arms questionably belong to the Scharfenbergia impella group

Large, broken grooved spines

92ATr09A (DR 1578) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38' 15" N., Long. 157 deg. 32'35" N. Ribbon-bedded, medium-greenish-gray-weathering, medium- to dark-gray chert; sample from top 1 ft of north-dipping, approx. 5-m-thick section. (description from Dover et al., 2004, p. 53 (Table 2))

Spumellarian casts stand out in high relief on etched surfaces. Radiolarite, but radiolarians and spicules pervasively poorly preserved and recrystallized

Spicules are flattened and could be poorly preserved fragments of Pseudoheliodiscus Kozur and Mostler

Isolated spines assignable to Capnuchosphaera sp.

Several poorly preserved nassellarians (interior casts and at least two with numerous chambers; these are questionably assigned to Latium Blome .....

..... or Canoptum Pessagno)

92ATr9B (DR 1579) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'15" N., Long. 157 deg. 32'35" W. Sample from bottom 1 ft of approx. 5-m-thick chert section, upper part of which was sampled as 92ATr9A. (description from Dover et al., 2004, p. 54 (Table 2))

Etched surfaces shows radiolarians outlines as simple forms. Small spicules and spines are present. The >80 fraction (the smallest residue for the third wash) contains a few featureless spheres

A few fragments of nassellarians exhibit costae similar to Corum perfectum Blome

Corum sp.

?Latium sp.

Triassocampe sp.

Xipha pessagnoi (Nakaseko & Nishimura)

Xipha sp.

92ATr9C (DR 1580) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'15" N., Long. 157 deg. 32'35" W. Sample from 1-ft interval in middle of approx. 5-m-thick chert section, upper part of which was sampled as 92ATr9A. (description from Dover et al., 2004, p. 54 (Table 2))

The etched surface shows numerous spicules or perhaps broken spines, but radiolarian preservation poor

A fragment of a large spumellarian exhibits a complex mesh and a heavy grooved spine

A spindle-like cast of a nassellarian interior (consisting of six rings that do not change appreciably in diameter)

A few hexactine spicules, but spicules are not common

92ATr9X (DR 1581) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'15" N., Long. 157 deg. 32'35" W. Sample from nodular, concretionary chert mass (probable interval of unit lPMap that is too small to show on the geologic map). (description from Dover et al., 2004, p. 54 (Table 2))

Etched surfaces show the rock is radiolarian-rich--spines and spicules abundant; large pieces of clear quartz are common. Some matrix fragments exhibit veins(?) that intersect at several angles; interstices are filled with crystalline(?) quartz

One short, grooved primary spine

Rare short fragments of very robust spicules

Fragments of "ladders," both coarse and regular pores

Bladed spines that have spinules on the blade edges

Several poorly preserved fragments of ?latentifistulid centers (suggesting Paronaella impella Group forms)

Fragments of spicules that have a curved, flattened double head, like a long curved double-bladed axe

92AD21A (DR 1515) , Howard Pass , Howard Pass C-3. Lat 68 deg. 38'2.4" N., Long. 157 deg. 32'45" W. Sample from uppermost m of approx. 5-m-thick chert interval; green, gray, and tan banded chert in 5-cm-thick beds. In thin section, fine-grained, dark, laminated chert containing a few percent spicules and radiolarians. (description from Dover et al., 2004, p. 54 (Table 2); [Formation: Unnamed chert - above Ipnavik unit of Lisburne Gp. -- (possibly) facies equivalent of upper Ipnavik unit. USGS Howard Pass 1:250,000 C3 quadrangle, T. 9 S., R. 24 W., SW 1/4, SW 1/4, sec. 28; near small knob (elev. approx. 640 m) west of unanmed tributary of Cutaway Creek; approx. 4.5 mi west of Pimple Creek and 3.5 mi south of Monument Ridge; same locality as 92AD21B. Lat 68°38'01", long 157°32'42". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Capnodoce sp. (partial tests that have broken primary spines)

Corum sp. (broken tests)

?Pseudosaturniforma sp. (partial cortical ring)

92AD21B (DR 1516) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 38'2.4" N., Long. 157 deg. 32'45" W. Sample from 2 m below top of approx. 5-m-thick chert interval; green and white banded chert in 5-cm-thick beds. In thin section, chert is fine-grained, greenish-brown, clay-rich(?) and contains minor spicules and radiolarians. (description from Dover et al., 2004, p. 55 (Table 2)); [Formation: Unnamed chert unit - Ipnavik unit of Lisburne Gp. -- or (possibly) facies equivalent of upper Ipnavik unit. USGS Howard Pass 1:250,000 C3 quadrangle, T. 9 S., R. 24 W., SW1/4, SW 1/4, sec. 28; near small knob (elev. approx. 640 m) west of unnamed tributary of Cutaway Creek; approx. 4.5 mi west of Pimple Creek and 3.5 mi south of Monument Ridge; same locality as 92AD21A. Lat 68°38'01", long 157°32'42". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Capnuchosphaera sp. (broken tumidaspines only)

Latium sp. (casts)

?Xenorum sp. (broken spines and partial cortical shells)

Xipha striata Blome

92ATr8A (DR 1575) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37'52" N., Long. 157 deg. 30'50" W. Gray to varicolored chert rubble, locally green and glassy. (description from Dover et al., 2004, p. 55 (Table 2))

Etched surfaces show abundant radiolarians and hints of spicules

Quite thoroughly recrystallized, preservation of all radiolarians is poor

Several varieties of spumellarians is suggested

Several poor triangular to tetrahedral forms that probably are varieties of Scharfenbergia

Coarse forms are probably spumellarians with matrix

A few stubby albaillellids (resembling A. cartalla Ormiston and Lane)

Fragment of a taller, narrower albaillellid

92ATr8B1 (DR 1576) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37'52" N., Long. 157 deg. 30'50" W. Rubble of dark gray chert approx. 20 m downhill from 92ATr8A. (description from Dover et al., 2004, p. 55 (Table 2))

Etched surfaces appear uniformly recrystallized; radiolarians are casts only

Fragments of multi-shelled spumellarians possessing simple, thin spines

Fragments of thick spicules, simple and bladed spines with spinules

A long ichnofossil (?worm tube)

A few forms resemble scharfenbergids

Multi-spined spumellarians

Scraps of pore mesh and portions of "latentifistulid" rays (not ladders) that have irregular pore patterns; these last suggest the "Paronaella impella group" for which Holdsworth and Murchey (1988) indicate a range of late Osagean to Morrowan(?)

92ATr8B2 (DR 1577) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37'52" N., Long. 157 deg. 30'50" W. Chert rubble lithologically identical to, but approx. 20 m downslope from, 92ATr8A. (description from Dover et al., 2004, p. 56 (Table 2))

Etched surface has very well aligned but somewhat squashed radiolarians, granular, heavily recrystallized

Many recrystallized spumellarians that have broken, delicate spines

Numerous flat (not tetrahedal) triangular forms referable to Scharfenbergia--possibly Scharfenbergia ruestae (Ormiston and Lane) (see Holdsworth and Murchey, 1988, plate 34.4, figs. 16 and 17)

Poorly preserved multi-shell spumellarians

Moderately robust spicules

Several very poorly preserved and broken forms assignable to Albaillella Deflandre; these appear to be short tests and could be A. cf. A. cartalla Ormiston and Lane, which Holdsworth and Murchey (1988) suggested is a pre-Chesterian taxon

91Tr22C (DR 1598) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37.5' N., Long. 157 deg. 34.4' W. Rubble of light-weathering, medium gray chert. (description from Dover et al., 2004, p. 56 (Table 2))

Short, blunt spines of Eptingium ......

..... (or possibly a Pseudostylosphaera)

Bipolar, three- and four-spinned forms that have stout spines

Fragmentary nassellarian that has a rounded cephalic area

91Tr15C (DR 1595) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.5' N., Long. 157 deg. 34.75' W. Fine rubble of hematitic, red-weathering chert having a somewhat earthy texture and containing impressions of Monotis (description from Dover et al., 2004, p. 56 (Table 2))

Fragment of Livarella sp.

?Capnodoce sp.

Etched pieces contain many thin-rimmed Pseudoheliodiscus (cf. the form shown in plate 33.2 of Blome and others, 1988, and some that have broader rims)

Rare grooved spines (none including main part of test)

Three-spined forms uniformly lacking mesh details

91Tr15CX (DR 1596) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.5' N., Long. 157 deg. 34.75' W. Rubble of thin-bedded, medium-gray chert, variable to light-weathering, adjacent to chert sampled as 91Tr15C. (description from Dover et al., 2004, p. 56 (Table 2))

Multishelled, heavy grooved-spine spumellarian

?Khalerosphaera sp.

Nassellarian fragment

Three-spined form with stubby, slightly twisted spine

91Tr15E (DR 1597) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.5' N., Long. 157 deg. 34.75' W. Earthy-textured chert associated with dark-gray-weathering, platy, tuffaceous(?) rock; slightly northwest of 91Tr15C and 15CX. (description from Dover et al., 2004, p. 56 (Table 2))

Emiluvia sp.

Staurodoras sp.

Eptingium sp.

Stout twisted spines not attached to main part of test

91Tr33A (DR 1604) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.2' N., Long. 157 deg. 34.1' W. Rubble of dark-brownish-gray chert, locally glassy luster, weathers medium-greenish-gray with earthy rinds. (description from Dover et al., 2004, p. 57 (Table 2))

Capnuchosphaera spp. spines

Castrum perornatum Blome

Narrow-rimmed cortical ring assignable to Acanthocircus sp.

Khalerosphaera blade fragment

Poorly preserved nassellarian fragments

91TR26C (DR 1599) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36.3' N., Long. 157 deg. 31.1' W. Rubble of black, thin-bedded chert associated with cherty paper shale. (description from Dover et al., 2004, p. 57 (Table 2))

Khalerosphaera spine tip

Capnuchosphaera spine tip

Fragments of either Acanthocircus ......

..... or Pseudoheliodiscus

Abundant twisted spines

92ARm44A (DR 1490) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36'25" N., Long. 157 deg. 28'20" W. White-weathering, black chert with radiolarians. (description from Dover et al., 2004, p. 57 (Table 2)); [Formation: Mississippian-Triassic -- unknown unit. USGS Howard Pass 1:250,000 C3 quadrangle, T. 10 S., R. 24 W., sec. 3, approx. 0.5 mi NE of unnamed lake on divide between Cutaway and Cula Creek drainage; 3.5 mi SW of Pimple Peak and 3.5 mi NW of Rim Butte. Lat 68°36'29", long 157°28'29". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved and recrystallized forms including Latentifistulid-like form (casts only)

91Tr29B (DR 1601) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.5' N., Long. 157 deg. 29.2' W. Buff to orange stream cuts of medium-light-gray-weathering, dark-brownish-gray chert, in 5- to 10-cm-thick beds, underlain by mudstone. (description from Dover et al., 2004, p. 57 (Table 2))

All radiolarians fragmentary in this residue

Rare tightly twisted spines that resemble those belonging to Xenorum

Bipolar forms

Fragment of a nassellarian

Tiny spine tip of Khalerosphaera

91Tr38C (DR 1612) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.6' N., Long. 157 deg. 36.5' W. Relatively thick-bedded, contorted chert, associated with Monotis-bearing limestone. (description from Dover et al., 2004, p. 57 (Table 2))

Capnuchosphaera spp.

Corum perfectum Blome

Fragments of twisted spines

Blades of Khalerosphaera

Delicate Pseudoheliodiscus with thin rim

91Tr37A (DR 1608) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.3' N., Long. 157 deg. 37.3' W. Medium-green, medium- to thick-bedded chert; sample from highest part of exposure. (description from Dover et al., 2004, p. 57 (Table 2))

Poor sample

Ring fragments of Acanthocircus .....

..... or Pseudoheliodiscus

Possible Capnuchosphaera spine

Bladed spine tip of Khalerosphaera

91Tr37B (DR 1609) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.3' N., Long. 157 deg. 37.3' W. Red-weathering, crumpled chert, containing local jasperoid lumps; sample from middle of chert exposure at this locality. (description from Dover et al., 2004, p. 57 (Table 2))

Robust bladed spines with spinules, some light torsion (see sample 91Tr36A)

Ladder ray (?Pseudotormentus)

Partial Pseudoalbaillella sp. possessing a short skirt (perhaps a "scalprata" morphotype)

Follicucullus, more swollen than F. scholasticus m. II Ishiga but less swollen than F. charveti Caridroit and De Wever

91Tr36A (DR 1607) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35.1' N., Long. 157 deg. 37.5' W. Strongly deformed, thin-bedded, red-weathering chert. (description from Dover et al., 2004, p. 57 (Table 2))

Several kinds of Latentifistula spp.

Apical horn of a Pseudoalbaillella

Irregular mesh on lattice/ladder ray

Extremely long-bladed spines on etched surfaces

91Tr43B (DR 1615) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 32' N., Long. 157 deg. 29' W. Medium-greenish-gray- and red-weathering chert, locally nodular. (description from Dover et al., 2004, p. 58 (Table 2))

Reddish chert residue containing poorly preserved forms only

Bladed spines exhibiting spinules

Possible Ormistonella-like fragments

Arm fragments generically called "ladders"

Possible apical tip of Pseudoalbaillella sp.

91Tr42C (DR 1614) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 31.8' N., Long. 157 deg. 28.7' W. Rubble of light-weathering, medium-gray chert. (description from Dover et al., 2004, p. 58 (Table 2))

Tetrahedral or at least inflated Scharfenbergia morphotypes

Fragment of an "impella" ray

Bladed spine fragments

Heavy grooved spines with some torsion, cf. Palaeoxyphostylus, some attached to fragments of central part of test and at least one suggesting four-armed forms may be present

91Tr40B (DR 1613) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 31.3' N., Long. 157 deg. 30' W. Sample from nodular-bedded, medium-greenish-gray chert (locally red-weathering) that overlies unit Mlb, lithology resembles that of unit PlPs. Conodonts (table 1) from upper part of unit Mlb at this locality are of probable Mississippian age. (description from Dover et al., 2004, p. 58 (Table 2))

Mostly poorly preserved spumellarians, casts only

Fragments of long primary spines

One latticed, broken ray (arm)

Possible fragment that may be the apical tip of Pseudoalbaillella

91Tr3A (DR 1592) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.9' N., Long. 157 deg. 36.8' W. Medium-gray, dark- to greenish-gray chert in even, 5- to 10-cm-thick beds, exposed along stream cut; sample 91Tr3a from slightly northwest of 91Tr2A. (description from Dover et al., 2004, p. 58 (Table 2))

Flattened nassellarian casts (possibly Corum Blome)

Capnuchosphaera spp. spine fragments

Narrow-rim Pseudoheliodiscus fragment

91Tr2A (DR 1591) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.8' N., Long. 157 deg. 36.0' W. Medium-gray, dark- to greenish-gray chert in even, 5- to 10-cm-thick beds, exposed along stream cut; sample 91Tr3a from slightly northwest of 91Tr2A. (description from Dover et al., 2004, p. 58 (Table 2))

Spumellarians that have strong, grooved spines

Poorly preserved casts of nassellarian

91Tr1B (DR 1590) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.75' N., Long. 157 deg. 36.1' W. Dark-olive gray chert in distorted, 5- to 25-cm-thick layers, bleached greenish-gray in part. (description from Dover et al., 2004, p. 58 (Table 2))

Poorly preserved sample contains scraps of nassellarians.

Bladed spines with tips that resemble those of Khalerosphaera

Pseudoheliodiscus sp. with narrow rim (indicating that it is not P. sandspitensis)

Cortical shell fragments that have twisted spines

91Tr14A (DR 1593) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.1' N., Long. 157 deg. 37.0' W. Medium-bedded, medium-gray, light-greenish-gray- to white-weathering chert. (description from Dover et al., 2004, p. 58 (Table 2))

Scharfenbergia spp. strongly tetrahedral and flatter morphologies

Bipolar forms, possibly Belowea .....

..... or Palaeoxyphostylus

?Callela sp.

An "impella"-type ray

91Tr14B (DR 1594) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 30.1' N., Long. 157 deg. 37.0' W. Hematite-stained, dark-gray to black chert, locally light-weathering; sample from larger, higher ridge a few hundred feet south of 91Tr14A. (description from Dover et al., 2004, p. 58 (Table 2))

Scharfenbergia spp., poorly preserved "impella" ray fragments

92ADo101B (DR 1470) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 29'2.4' N., Long. 158 deg. 24'58" W. Grayish-green, radiolarian-rich chert. (description from Dover et al., 2004, p. 58 (Table 2)); [Formation: Ps? -- Siksikpuk?, Etivluk Gp. USGS Howard Pass 1:250,000 B5 quadrangle, T. 11 S., R. 28 W., on ridge between low summits in section 15, T. 11 S., R. 28 W., approximately 4.5 mi west of upper Kuna River; approx. 0.125 mi north of locality 92ADo99B. Lat. 68°29'00", long. 158°25'55". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including forms assignable to Scharfenbergia impella group

Rare sponge spicules

92ADo100B (DR 1469) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 29'2.4" N., Long. 158 deg. 25'50" W. Red siliceous argillite, stratigraphically higher than 92ADo101B (loc. 76). Stratigraphic unit uncertain; sample taken from rocks that appear transistional between unit lPMap and overlying unit JlPip. (description from Dover et al., 2004, p. 59 (Sheet 2)); [Formation: Ps? -- Siksikpuk?, Etivluk Gp. USGS Howard Pass 1:250,000 B5 quadrangle, T. 11 S., R. 28 W., on ridge between low summits in section 15, T. 11 S., R. 28 W., approximately 4.5 mi west of upper Kuna River; approx. 0.125 mi north of locality 92AD099B. Lat 68°29'00", long 158°25'55". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Scharfenbergia impella-like forms (too recrystallized to positively identify)

Also broken bladed spines

Common sponge spicules

92ADo99B (DR 1468) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 28'55" N., Long. 158 deg. 25'50" W. Bedded, complexly folded, gray chert, sample taken just below zone of red chert. (description from Dover et al., 2004, p. 59 (Sheet 2)); [Formation: Pennsylvanian-Triassic -- Etivluk Gp. USGS Howard Pass 1:250,000 B5 quadrangle, T. 11 S., R. 28 W., on ridge almost on junction between secs. 15 and 22 of T. 11 S., R. 38 W.; approximately 4.5 mi west of upper Kuna River, 0.125 mi west of locality 92ADo98B. Lat 68°28'57", long. 158°25'55". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including ?Betraccium sp. (one broken specimen)

Capnuchosphaera sp. (broken tumidaspines)

?Khalerosphaera sp. (broken spines)

Pseudoheliodiscus sp. (cortical ring fragments)

92ADo98B (DR 1467) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 28'55" N., Lat. 158 deg. 25'37" W. Sample from rubble of maroon to grey-green bedded chert, containing abundant radiolarians, underlying unit Kop. The association of Livarella sp. with Capnuchosphaera sp. suggests that Livarella may extend down into the middle Norian, at least in North American rock sequences. (description from Dover et al., 2004, p. 59 (Table 2)); [Formation: Pennsylvanian-Triassic -- Etivluk Gp. USGS Howard Pass 1:250,000 B5 quadrangle, T. 11 S., R. 28 W., secs. 15 and 22; on ridge almost on junction between secs. 15 and 22 of T. 11 S., R. 28 W., approximately 4 mi west of upper Kuna River, 0.25 mi west of locality 92ADo96B. Lat. 68°28'58", 158°25'40". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including Capnuchosphaera sp. (isolated tumidaspines)

?Laxtorum sp.

Livarella sp.

Pseudoheliodiscus sp. cf. P. finchi Pessagno

Saitoum sp.

92ADo96B (DR 1466) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 28'55" N., Long. 158 deg. 25'19" W. Green-gray bedded chert; uppermost part of unit JlPip, at contact with unit Kop. (description from Dover et al., 2004, p. 59 (Table 2)); [Formation: Pennsylvanian-Triassic -- Etivluk? USGS Howard Pass 1:250,000 B5 quadrangle, T. 11 S., R. 28 W., on ridge almost on junction between secs. 15 and 22 of T. 11 S., R. 28 W.; approximately 4 mi west of upper Kuna River, 0.25 mi east of locality 92ADo98B. Lat. 68°28'57", 158°25'20". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including Acanthocircus sp. (cortical ring fragments)

Canoptum sp. cf. C. unicum Pessagno and Whalen

Canoptum sp.

Droltus sp.

Pantanellium cf. P. kungaense Pessagno and Blome

Pantanellium sp.

91ANs23A (DR 1349) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 27'3.6" N., Long. 158 deg. 36'7.2" W. Laminated radiolarian chert in apparent fault contact with graywacke of the Okpikruak Formation. Although the fauna is poorly preserved, the co-occurrence of conptids having 12-14 post-abdominal chambers, such as Canoptum dixoni, as well as abundant Orbiculiforma sp., indicate a definite Early Jurassic age, and a probable Pliensbachian age.

Radiolarians poorly preserved; most exhibit little or no external meshwork or pore structure

Canoptum sp. cf. C. dixoni (Pessagno and Poisson)

Canoptum sp.

?Canutus sp.

?Katroma sp.

Orbiculiforma sp. aff. O. multifora Pessagno and Poisson

Orbiculiforma sp.

91ANs23B (DR 1350) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 26'42" N., Long. 158 deg. 36'50" W. Uppermost chert at this locality, in fault(?) contact with Okpikruak Formation; sample includes both red and green-gray chert. Sample 91ANs23B may be slightly younger than 91ANs23A, as the former contains forms possessing horn and robust circumferential ridges assignable to ?Parvicingula sp. The poor preservation makes an accurate specific assignment impossible. (description from Dover et al., 2004, p. 59 (Table 2))

Radiolarians poorly preserved, most lacking preserved external meshwork or visible pore structure

?Bagotum sp.

Canutus sp. cf. C. hainaensis Pessagno and Whalen

Hsuum aff. H. belliatum Pessagno and Whalen

?Parvicingula sp.

Saitoum sp.

91ANs23C (DR 1351) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 26'35" N., Long. 158 deg. 37'20" W. Chert south of samples 91ANs23A and 23B. The poor preservationof all forms makes it impossible to assign an accurate age, but the absence of nassellarians and presence of abundant entactinids suggest a possible pre-Mesozoic (Paleozoic) age. (description from Dover et al., 2004, p. 60 (Table 2))

Radiolarians recrystallized, poorly preserved, all lacking preserved external meshwork or visible pore structure

No nassellarians or cone-shaped casts visible in the coarse or fine dry acid residue

Several large, broken entactiniids preserved that are similar in geometry and spine structure to Parentactinia itsukaichiensis Sashida and Tonishi

?Pseudoalbaillella sp.

92ARm101A (DR 1494) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 26'28" N., Long. 158 deg. 32'17" W. Chert, chiefly red, that contains subordinate, irregular greenish layers. (description from Dover et al., 2004, p. 60 (Table 2)); [Formation: Pennsylvanian-Triassic? -- uncertain unit. USGS Howard Pass 1:250,000 B5 quadrangle, T. 11 S., R. 28 W., sec. 31; on low divide between hills 930 and 1031, approx. 1.0 mi east of upper Primus Creek in section 31. Lat 68°26'27", 158°52'20". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including ?Albaillella (?) undulata (cast)

?Albaillella sp. (fragments only)

Rare and corroded isolated bladed spines

91ANs24B (DR 1353) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 25'34" N., Long. 158 deg. 37'37" W. Red and green chert that contains visible radiolarians. (description from Dover et al., 2004, p. 60 (Table 2))

All radiolarian recrystallized, poorly preserved, lacking external meshwork or visible poore structure

?nassellarians (several cone-shaped casts that have distinct ridges that may be circumferential ridges)

92ADo29 (DR 1457) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23'35" N., Long. 158 deg. 50'13" W. Medium-gray and grayish-green, thin-bedded chert, locally weathers light cream-colored. Sample from white and black banded chert; white layers contain abundant radiolarians. (description from Dover et al., 2004, p. 60 (Table 2)); [Formation: Mississippian-Triassic -- Etivluk Gp? USGS Howard Pass 1:250,000 B-5 quadrangle, T. 12 S., R. 30 W., sec. 14; small spur off main ridge between Primus and Buccaneer Creeks. Lat 68°23'36", long 158°50'15". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including Capnodoce sp. (isolated spine)

Capnuchosphaera sp. (isolated tumidaspines)

Syringocapsa turgida

Triassocampe sp.

92ABs54 (DR 1495) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 22'40" N., Long. 158 deg. 49'50" W. Sample from interval of whitish-gray-weathering chert; underlain and overlain by black chert. (description from Dover et al., 2004, p. 60 (Table 2)); [Formation: Mississippian-Triassic -- uncertain. USGS Howard Pass 1:250,000 B5 quadrangle, T. 12 S., R. 30 W., sec. 25; on hillside approx. 0.25 mi west of Primus Creek from point approx. 2 mi upstream from confluence with Buccaneer Creek, at elevation 450 m, approx. 0.25 mi NE of hill 515. Lat 68°22'39", long 158°49'48". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Albaillella sp. cf. A. levis

Deflandrella(?) cf. D. manica (arm fragments)

?Ishigaum sp. (cast)

92ADo83B (DR 1463) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 22'23" N., Long. 158 deg. 47'2.4" W. Medium-gray-gray and grayish-green chert, near rubble of red and brown argillite. (description from Dover et al., 2004, p. 60 (Table 2)); [Formation: Pennsylvanian-Triassic -- In Ipnavik sequence? USGS Howard Pass 1:250,000 B5 quadrangle, T. 12 S., R. 29 W., sec. 30; flat summit area 1 mi east of Primus Creek, measured from a point on Primus Creek approximatley 2 mi above its mouth. Approximate same locality as 92ADo83₁ and 92ADo83E₂. Lat 68°22'24", long 157°47'00". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Capnuchosphaera sp. (individual primary spines and broken shells)

Pseudoheliodiscus sp. (small fragments of cortical outer ring)

92ADo83E₁ (DR 1464) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 22'15" N., Long. 158 deg. 47'24" W. Red chert, about 1,000 ft southwest of 92ADo83B. (description from Dover et al., 2004, p. 60 (Table 2)); [Formation: Pennsylvanian-Triassic chert unit -- in Ipnavik sequence? USGS Howard Pass 1:250,000 B5 quadrangle, T. 12 S., R. 29 W., sec. 30; flat summit area 1 mi east of Primus Creek measured from a point on Primus Creek approx. 2 mi. above its mouth. Same locality as 92ADo83B and 83E₂. Lat 68°22'18, 157°47'18". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including Betraccium sp.

Capnuchosphaera sp. (broken tumidaspines)

Livarella sp.

Pantanellium sp.

92ADo83E₂ (DR 1465) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 22'16" N., Long. 158 deg. 47'24" W. Green chert, about 75 ft south of 92ADo9283₁. (description from Dover et al., 2004, p. 61 (Table 2)); [Formation: Pennsylvanian-Triassic chert unit -- in Inavik sequence? USGS Howard Pass 1:250,000 B5 quadrangle, T. 12 S., R. 29 W., sec. 30; flat summit area 1 mi east of Primus Creek, measured from a point on Primus Creek approx. 2 mi above its mouth. Same locality as 92ADo83B and -83E₁. Lat 62°22'18", long 157°47'18". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including cortical ring fragments assigned to either Acanthocircus ......

..... or Pseudoheliodiscus sp. (ring fragments missing secondary spines)

?Corum sp. (poorly preserved forms with little ornamentation)

92ARm25A (DR 1487) , Howard Pass , Howard Pass B-5. Lat. 68 deg. 22'55" N., Long. 158 deg. 38'20" W. Radiolarian chert that may be part of a tectonic melagne or major fault zone. (description from Dover et al., 2004, p. 61 (Table 2)); [Formation: Unknown -- occur in structurally disrupted zone below Sinniktaneyak ophiolite. USGS Howard Pass 1:250,000 B5 quadrangle, T. 12 S., R. 29 W., sec. 23; in stream cut on north side of Urvaksak Creek, approx. 4.5 mi upstream from Desperation Lake. Lat 68°22'58", long 158°38'20". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved and unidentifiable recrystallized casts of nasellarians.

91AD13A (DR 1513) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 22'41" N., Long. 158 deg. 08'40" W. Medium-gray to black, vitreous chert, weathering white to gray and (locally) reddish-brown; 101-5 percent radiolarians visible on most fresh surfaces. Thin section is pale to dark-brown chert that contains 10-40 percent radiloarians; quartz crystals within tests are generally finer grained than those in the matrix. (description from Dover et al., 2004, p. 61 (Table 2)); [Formation: Akmalik (Mississippian). USGS Howard Pass 1:250,000 B4 quadrangle, T. 12 S., R. 27 W., sec. 26; near knob at 760 m high, approx. 0.5 mi north of headwaters of Makpik Creek and 4.5 mi east of benchmark labeled "Apex"; same locality as 91AD13A. Lat 68°22'40", long 158°08'40". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preservd forms including those questionable assigned to the Scharfenbergia impella group

Also poorly preserved undescribed spumellarians and rare spicules

91AD13J (DR 1514) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 22'41" N., Long. 158 deg. 08'40" W. Tan-weathering, pale- to medium-green, vitreous chert; beds 2- to 10-cm thick. Pyrite locally abundant, radiolarians few to 15 percent. Chert associated with (apparently interbedded with) maroon, green, and black mudstone. Thin section is pale chert with minor, poorly preserved radiolarians (some tests replaced zeolite?) and trace detrital quartz. Rocks represent interval of unit JlPip too small to shown on geologic map. (description from Dover et al., 2004, p. 61 (Table 2)); [Formation: Triassic Pc overlying Mississippian. USGS Howard Pass 1:250,000 B4 quadrangle, T. 12 S., R. 27 W., sec. 26; near knob at 760 m high, approx. 0.5 mi north of headwaters of Makpik Creek and 4.5 mi east of benchmark labeled "Apex"; same locality as 91AD13A. Lat 68°22'40", long 158°08'40". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Only identifiable forms are spine fragments questionable assignable to ?Capnuchosphaera sp.

91ANs18A (DR 1348) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 22'01" N., Long. 158 deg. 13'05" W. Red interpillow chert in massive, amygdaloidal basalt. (description from Dover et al., 2004, p. 61 (Table 2))

All radiolarians recrystallized, poorly preserved as casts and molds only

Cone-shaped ?nassellarians

?Pseudostylosphaera sp. (recrystallized, ellipsoidal crtical shell, nodes, with robust, twisted primary spines)

92ADo313 (DR 1486) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 21'18" N., Long. 158 deg. 00'58" W. Gray to grayish-green chert. (description from Dover et al., 2004, p. 61 (Table 2)); [Formation: Pennsylvanian-Triassic -- Etivluk? USGS Howard Pass 1:250,000 B4 quadrangle, T. 34 N., R. 4 E., on slope elevation of 700 meters and approx. 1 mi SE of small lake in section 7 at head of a small fork of Story Creek. Lat 68°21'21", long 158°00'56". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including broken Eptingium-like inflate spines

Triassocampe sp. (casts)

91ANs14A (DR 1347) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 21'14" N., Long. 158 deg. 17'20" W. Gray chert, associated with sheared, amygdaloidal pillow basalt. (description from Dover et al., 2004, p. 61 (Table 2))

All radiolarians recrystallized and poorly preserved as casts and molds

Spherical to ovoid, flattened casts of spumellarians, occasional isolated, broken spines

?Bagotum sp.

?Pantanellium sp. (poorly preserved casts that have bipolar primary spines)

86SK238A (MR 7266) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 21'10" N., Long. 158 deg. 17'10" W. Chert associated with red-weathering basal, in fault contact with vesicular basalt and limestone. (description from Dover et al., 2004, p. 61 (Table 2))

Few, sparse nassellarians

91ANs13A (DR 1346) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 21'05" N., Long. 158 deg. 16'50" W. Sample from 4-cm-thick layer of gray chert in section of brown-weathering, sheared basalt. (description from Dover et al., 2004, p. 62 (Table 2))

Poorly preserved spumellarians, recrystallized, several pyritized

?capnuchosphaerid primary spine (broken and poorly preserved; these distinct primary spines that belong in the radiolarian family Capnuchosphaeridae are hollow in their proximal parts, triradiate and sometimes twisting in their medial parts, and are solid and circular in axial section in their distal parts)

?conodont fragment (recrystallized and poorly preserved)

86SK240B (MR 7269) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 19'52" N., Long. 158 deg. 16'23" W. Gray and buff chert, interbedded with siliceous argillite; at base of exposed section. Lithology and fauna appear transistional between those of units lPMk and JlPe. (description from Dover et al., 2004, p. 62 (Table 2))

Scharfenbergia tailleurense group Holdsworth and Murchey

86SK239A (MR 7268) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 19'15" N., Long. 158 deg. 19'10" W. Gray chert. Previously published fossil data from approximately this locality (table 4). (description from Dover et al., 2004, p. 62 (Table 2))

Few, sparse nassellarians

92ADo214B (DR 1475) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 28'30" N., Long. 157 deg. 44'46" W. Medium- to thick-bedded, medium-gray chert with light-weathering partings. (description from Dover et al., 2004, p. 62 (Table 2)); [Formation: unknown -- Mississippian-Triassic. USGS Howard Pass 1:250,000 B3 quadrangle, T. 11 S., R. 25 W., sec. 22; approx. 0.125 mi NE of summit 764 on small ridge on NE side of Safari Creek opposite first main tributary of Safari Creek on B3 quadrangle. Lat. 68°28'31", Long 157°44'43". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Acanthocircus sp. cf. A. hexagonus (Yao)

Capnuchosphaera sp. (tumidaspine fragments only)

92ADo67B (DR 1461) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 29'2.4" N., Long. 157 deg. 26'06" W. Thin-bedded, grayish-green to gray radiolarian chert, interbedded with olive to grayish-green siliceous argillite. (description from Dover et al., 2004, p. 62 (Table 2)); [Formation: Pennsylvanian-Triassic -- Etivluk Gp. USGS Howard Pass 1:250,000 B3 quadrangle, T. 11 S., R. 24 W., sec. 14; southwest part of spur ridge 0.5 mi south of Bupto Creek and 0.25 mi. SW of locality 92ADo66B. Lat 68°29'02", 157°26'12". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including ?Scharfenbergia spp.

Albaillella cf. A. cartalla

Rare sponge spicules

92ADo202B (DR 1474) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 26'13" N., Long. 157 deg. 40'45" W. Bright reddish-orange-weathering, light- to medium-gray to grayish-green chert; thin bedded with locally abundant radiolarians. Abundant vein quartz in radiolarian sample residue. (description from Dover et al., 2004, p. 62 (Table 2))] [Formation: Pennsylvanian-Triassic -- Etivluk Gp? USGS Howard Pass 1:250,000 B-3 quadrangle, T. 12 S., R. 25 W., sec. 2, small orange-weathering spur ridge on NE side of easternmost tributary of Safari Creek. 68°26'14", 157°40'40". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

No identifiable forms except poorly preserved broken arms possibly assignable to the Scharfenbergia impella group

Abundant sponge spicules

91ADo48A (DR 1453) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 26'24" N., Long. 157 deg. 33'00" W. Gray-weathering, brown to gray radiolarian chert in float (no outcrop); probably thin bedded. Overlies Monotis-bearing limestone member of Otuk. (description from Dover et al., 2004, p. 62 (Table 2)); [Formation: Triassic - Otuk?? USGS Howard Pass 1:250,000 B3 quadrangle, T. 11 S., R. 24 W., secs. 32 and 33; approx. 0.33 mi, SW of hill 973 in area of unnamed ridges in headwaters of Bupto Creek, approx. 5 mi. south of Mt. Bupto. Lat. 68°26'25", long. 157°33'00". (description from E&R report by Blome and Reed, dated June 23, 1993; Shipment no. A-92-9D.)]

Poorly preserved forms with little external meshwork remaining including unidentifiable spumellarians and a nassellarian questionably identified as ?Corum sp.

92ADo81B (DR 1462) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 26'24" N., Long. 157 deg. 26'10" W. Dark chert float associated with volcanic and volcaniclastic rocks. (description from Dover et al., 2004, p. 62 (Table 2)); [Formation: Mississippian-Triassic?? Volcaniclastic unit (previously unknown). USGS Howard Pass 1:250,000 B3 quadrangle, crest of spur ridge in SE corner of sec. 35, T. 12 S., R. 24 W. Lat 68°26'20", long 157°26'00". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved assemblage including ?Canutus sp.

Other recrystallized crushed and distorted nassellarians

Rare spumellarian fragments

92ARm63A (DR 1491) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 25'44" N., Long. 157 deg. 17'45" W. Tightly folded, light-gray to green and light-brown to cream-colored chert in beds 1-15 cm thick, structurally below mafic igneous rocks. (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: Mississippian-Triassic -- unknown unit structurally? below Memorial Creek volcanics. USGS Howard Pass 1:250,000 B3 quadrangle, T. 12 S., R. 23 W., sec. 4; on nose of low ridge on north side of Memorial Creek, approx. 2.75 mi upstream from east edge of the B3 quadrangle. Lat 68°25'44", long 157°17'43". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Capnuchosphaera sp. (tumidaspine fragments)

Pseudoheliodiscus sp. (fragment of cortical ring)

Isolated twisted spines

92ABs125 (DR 1503) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 25'48" N., Long. 157 deg. 17'05" W. Light-greenish-gray-weathering, dark-gray, vitreous chert with conchoidal fracture, orange-brown iron stain, and locally abundant radiolarians, beds 1-10 cm thick (average approx. 6 cm). (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: Chert interbedded in undated volcaniclastic unit. USGS Howard Pass 1:250,000 B3 quadrangle, T. 12 S., R. 24 W., sec. 2; approx. 0.75 mi south of upper part of main SW tributary of Bupto Creek, north end of ridge and approx. 1.25 mi west of hill 852 and 0.75 mi SW of locality 92ABs122. Lat 68°25'42", long 157°17'11". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms incluidng ?Canoptum sp. (casts)

Capnuchosphaera sp. (isolated tumidaspines)

Corum sp. cf. C. perfectum (casts only)

Xenorum sp. (fragments of cortical shell and primary spines)

92ABs85 (DR 1498) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 24'40" N., Long. 157 deg. 28'40" W. Light-reddish-gray and light-blue-green chert in float along with basalt. (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: Interpillow chert in unknown volcanic unit. USGS Howard Pass 1:250,000 B3 quadrangle (no further designation), T. 12 s., R. 24 W., sec. 10; on hillside SE of main gully, approx. 0.5 mi SE of hill 967 and 0.75 mi NE of northwest-trending segment of upper Memorial Creek. Lat 68°24'40", long 157°28'46". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including abundant casts of spumellarians with little external meshwork

?Nazarovella sp. (guttered rays)

?Pseudoalbaillella sp. (poorly preserved fragment)

Rare sponge spicules

92ADo53B (DR 1454) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 24'36" N., Long. 157 deg. 27'05" W. Green chert forms films and masses between volcanic pillows; sample from a persistent chert bed about 3 ft thick that contains abundant radiolarians. (description from Dover et al., 2004, p. 63 (Table 2))

Poorly preserved assemblage containing abundant radiolarian fragments, isolated bladed spines, and a narrow, undescribed conical albaillellid of Mississippian aspect

92ABs79B (DR 1497) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 24'22" N., Long. 157 deg. 27'36" W. Bedded chert and thinly laminated limestones in outcrop, rubble, and float. Sample from olive-gray to dark, gray, pale yellow-orange-weathering chert that contains locally abundant radiolarians. (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: ? USGS Howard Pass 1:250,000 B3 quadrangle, T. 12 S., R. 24 W., sec. 14; approximately 0.25 mi SW of hill 875 and 0.33 mi NE of hill 951, in area of steep ridges north of the prominent bend on upper Memorial Creek. Lat 68°24'27", long 157°27'33". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly to moderately preserved assemblage including Emiluvia (?) cochleata

Eptingium manfredi manfredi

Pseudostylosphaera coccostyla

Pseudostylosphaera hellenica

Triassocampe sp.

92ARm73B (DR 1492) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 23'56" N., Long. 157 deg. 27'15" W. Dark-greenish-gray chert containing radiolarians, beneath Memorial Creek volcanic rocks. (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: Mississippian-Triassic -- Unit unknown, below Memorial Cr. volcanics. USGS Howard Pass 1:250,000 B3 quadrangle, T. 12 S., R. 24 W., sec. 14; north side of Memorial Creek where it bends upstream toward the northwest and 0.75 mi south of hill 875. Lat 68°24'00", 157°27'10". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved casts including ?Acanthocircus sp. .....

..... or ?Pseudoheliodiscus sp. (cortical ring fragments)

?Capnodoce sp. (broken inflated primary spines)

Capnuchosphaera sp. (tumidaspines only)

?Corum sp.

Pachus sp.

?Pseudostylosphaera sp. (partial test)

92ARm41A (DR 1489) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 19'23" N., Long. 157 deg. 45'22" W. Chert containing abundant radiolarians. (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: Pnnsylvanian-Triassic?? -- above Kuna. USGS Howard Pass 1:250,000 B3 quadrangle, T. 34 N., R. 5 E., on main divide at head of Safari Creek in section 29, approx. 0.75 mi SE of hill 1115; also locality 0.125 mi west of locality 92ARm-40A. Lat 68°19'23", 157°45'28". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including Albaillella (?) asymmetrica

Pseudoalbaillella sp. aff. P. longicornis

Entactinia cf. E. itsukaichiensis

Small bladed spines in fine (>63 microns) residue

92ARm40A (DR 1488) , Howard Pass , Howard Pass B-3. Lat. 68 deg. 19'23" N., Long. 157 deg. 45'11" W. Float of light gray chert above Kuna Formation. (description from Dover et al., 2004, p. 63 (Table 2)); [Formation: Pennsylvanian-Triassic? -- above Kuna. USGS Howard Pass 1:250,000 B3 quadrangle, T. 34 N., R. 5 E., on main divide at head of Safari Creek in section 29, approx. 0.75 mi SE of hill 1115; also located on 0.125 mi west of locality 92ARm-40A. Lat 68°19'21", long 157°45'10". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]

Poorly preserved forms including ?Pseudoalbaillella sp. (broken and crushed fragments)

86Tr2A (MR 7272) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 41'53" N., Long. 158 deg. 27'50" W. Sample from chert closely associated with large slab (or boudin) of tasmanites-bearing rock; chert resiude is medium-gray. (description from Dover et al., 2004, p. 64 (Table 2))

?Latentifistula impella (Ormiston and Lane) Group

Sponge spicules (abundant, but less abundant than radiolarians; include hexactine spicules [Hexactinellida] and ?anatriaene, strongyle, and large matted monaxon spicules [Demospongiaea?]

Preservation = 2 on a scale of 1-5

96Tr2F (MR 7275) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 41'53" N., Long. 158 deg. 27'50" W. Sample near base of uppermost chert interval at this locality; below (north) of Okpikruak Formation and above oil shale. Chert residue is white and coarse-grained. (description from Dover et al., 2004, p. 64 (Table 2))

Capnodoce sp.

Nassellarians

Twisted, bladed spines

A few hexactine sponge spicules

Preservation = 2 on a scale of 1-5

86Tr2G (MR 7295) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 41'53" N., Long. 158 deg. 27'50" W. Top of uppermost chert interval at this locality; chert residue is black. (description from Dover et al., 2004, p. 64 (Table 2))

Capnodoce .......

...... or Capnuchosphaera sp.

Nassellarians

Preservation = 2 on a scale of 1-5

79ANw8A (MR 1116) , Howard Pass , Howard Pass B-4. Lat. 68 deg. 27'0" N., Long. 158 deg. 18'18" W. Bedded gray chert, associated with black siltstone and dark-gray graywacke. (description from Dover et al., 2004, p. 64 (Table 2))

Theroperid radiolarians

Conodonts

Poor foraminifers

64Tr209R1 (MR 3151) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 40'1.2" N., Long. 157 deg. 38'8.4" W. Red- and green-weathering chert, associated with tasmanite, fine-grained clastic rocks, and mafic rocks. (description from Dover et al., 2004, p. 64 (Table 2))

Poorly preserved "complex" Paronaella sp.

Large spherical spumellariina, having three thick but very short, blunt primary spines

This fauna is probably Pseudoalbaillella assemblage (Holdsworth and Jones, 1980)

64Tr209R2 (MR 3152) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 40'1.2" N., Long. 157 deg. 34'8.4" W. Red weathering chert. (description from Dover et al., 2004, p. 64 (Table 2))

Latentodiotidae fam. nov. ad. int. Nazarov

Subfamily Latenofistulinae?: fragments

Subfamily Latenodiotinae?: poor specimens

92AD43F , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. (description from Dover et al., 2004, p. 65 (Table 3))

Coenostelodictyon sp.

92AD43G , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. (description from Dover et al., 2004, p. 65 (Table 3))

Pachyfavosites sp.

92AD43H , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. (description from Dover et al., 2004, p. 65 (Table 3))

Favosites sp.

92AD43I , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. (description from Dover et al., 2004, p. 65 (Table 3))

"Radiastraea" sp.?

Taimyrophyllum spp.

92AD43J , Howard Pass , Howard Pass C-4. Lat. 68 deg. 32'53" N., Long. 158 deg. 06'35" W. (description from Dover et al., 2004, p. 65 (Table 3))

Cystiphylloides sp. cf. C. lenzi Pedder and McLean

92ADo19A , Howard Pass , Howard Pass B-5. Lat. 68 deg. 25'12" N., Long. 158 deg. 56'06" W. (description from Dover et al., 2004, p. 65 (Table 3))

Actinostroma of a rather robust sort

92ADo19B , Howard Pass , Howard Pass B-5. Lat. 68 deg. 25'12" N., Long. 158 deg. 56'06" W. (description from Dover et al., 2004, p. 65 (Table 3))

Actinostroma of a rather robust sort

92AD69A , Howard Pass , Howard Pass B-5. Lat. 68 deg. 24'40" N., Long. 158 deg. 54'00" W. (description from Dover et al., 2004, p. 65 (Table 3))

Poorly preserved specimens of a ramose stromatoporoid, most likely Stachyodes sp.

92AD69C , Howard Pass , Howard Pass B-5. Lat. 68 deg. 24'40" N., Long. 158 deg. 54'00" W. (description from Dover et al., 2004, p. 65 (Table 3)

alveolitid coral

92AD69D , Howard Pass , Howard Pass B-5. Lat. 68 deg. 24'40" N., Long. 158 deg. 54'00" W. (description from Dover et al., 2004, p. 65 (Table 3))

Probably Stictostroma sp.

possibly the closely related Stromatoporella sp.

92AD23 , Howard Pass , Howard Pass B-5. Lat. 68 deg. 23'35" N., Long. 158 deg. 36'32" W. (description from Dover et al., 2004, p. 65 (Table 3))

Numerous prisms apparently derived from shells of the bivalve Atomodesma sp. are visible in thin section

91ANs17A , Howard Pass , Howard Pass B-4. Lat. 68 deg. 22'20" N., Long. 158 deg. 13'05" W. Sample from volcaniclastic(?) sandstone interlayered with basalt. (description from Dover et al., 2004, p. 65 (Table 3))

Molds and casts of Neospirifer sp., a spiriferid brachiopod

92AD57E (32451-PC) , Howard Pass , Howard Pass C-5. Lat. 68 deg. 33'43" N., Long. 158 deg. 51'45" W. (description from Dover et al., 2004, p. 67 (Table 4)); [Howard Pass C-5. 68°33'43", 158°51'45". 1/2-6 cm-thick, platy- to flaggy-bedded, light-gray to beige, crinoidal (40%), partly dolomited micrite with spines interbedded with lime packstone-wackestone and packstone-grainstone.
Collected ~30 m below top of ~80 m-thick (very rough estimate) section in Mississippian "crinoidal facies" (of Gil Mull) of Lisburne Group.
Collected from southern end of small hill (~900 m+ high), 2.75 miles west of Drenchwater Creek, ~0.5 mile east of west fork and ~0.25 mile west of east fork of Rampart Creek; NE1/4SW1/4 sec. 23, T. 10 S., R. 30 W. (description from Harris E&R report dated March 17, 1995; shipment A-95-3)]

Conodonts

91AD11A (31745-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35'55" N., Long. 157 deg. 41'00" N. Sample from 80-m-thick measured section of unit Mlri; 11A, 70 m above base of section; 11G, 80 m above base of section. (description from Dover et al., 2004, p. 67 (Table 4)); [Field nos. 91AD11A, 11G, and 11J are from about an 80 m section of Lisburne Group in the Ipnavik allochthon on a northwest-trending ridge, 2 km southeast of the headwaters of Ribbon Creek and 0.4 km due west of an unnamed tributary of Cutaway Creek. Samples from north side of ridge, east slope. Top of ridge at about 680 m. From lat. 68°54.8', long. 157°38.8', sec. 11, T. 10 S., R. 25 W., Howard Pass C-3 quadrangle.

Field No. 91AD11A (USGS colln. 31745-PC): about 70 m above base of section from limey bed about 22 cm thick--basal 2 cm coarse grained and crinoidal, upper part finer grained and laminated. (description from Harris, 1992 E&R report)]

Conodonts

91AD11G (31746-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 35'55" N., Long. 157 deg. 41'00" N. Sample from 80-m-thick measured section of unit Mlri; 11A, 70 m above base of section; 11G, 80 m above base of section. (description from Dover et al., 2004, p. 67 (Table 4)); [Field nos. 91AD11A, 11G, and 11J are from about an 80 m section of Lisburne Group in the Ipnavik allochthon on a northwest-trending ridge, 2 km southeast of the headwaters of Ribbon Creek and 0.4 km due west of an unnamed tributary of Cutaway Creek. Samples from north side of ridge, east slope. Top of ridge at about 680 m. From lat. 68°54.8', long. 157°38.8', sec. 11, T. 10 S., R. 25 W., Howard Pass C-3 quadrangle.

Field no. 91AD11G (USGS colln. 31746-PC): Approximately from top of section--crinoid-rich, coarse-grained skeletal packstone in bed about 10 cm thick.(description from Harris, 1992 E&R report)]

Conodonts

91Tr17 (31721-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37'05" N., Long. 157 deg. 36'00" W. Sample from Bion barite deposit of Kelley and others (1993), from about 25 m below chert containing Late Mississippian or Early Pennsylvanian radiolarians. (description from Dover et al., 2004, p. 67 (Table 4))

Conodonts

91Tr30 (31767-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 37'30" N., Long. 157 deg. 33'14" W.* [*latitude/longitude herein corrected from previously published version] (description from Dover et al., 2004, p. 67 (Table 4)); [Howard Pass C-3 quad. 68°37.48', 157°33.2'. Etivluk Group (Picnic Creek allochthon): calcitized radiolarite containing subordinate clacareous and siliceous sponge spicules.
This sample has been referred to the Akmalik Chert and described in Dumoulin and others (in press, table 1 and fig. 2, loc 15).(description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]

Conodonts

91Tr23 (31720-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 36'10" N., Long. 157 deg. 29'35" W. Sample from a layer of calcitized radiolarite in the Stack barite deposit of Kelley and others (1993). (description from Dover et al., 2004, p. 67 (Table 4))

Conodonts

90AD61Z (30939-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 33'58" N., Long. 157 deg. 35'10" W. a few specimens have a surficial gray patina suggesting rapid heating; sample taken 5 m above a mafic sill. (description from Dover et al., 2004, p. 67 (Table 4))

Conodonts

91Tr39 (31722-PC) , Howard Pass , Howard Pass C-3. Lat. 68 deg. 33'43" N., Long. 157 deg. 30'22" W.* [*latitude/longitude herein corrected from previously published version] From 70-m-thick measured section 0.8 km east of the Abby Creek barite deposit of Kelley and others (1993). Sample from a baritic limestone bed 34 m above base of section. (description from Dover et al., 2004, p. 67 (Table 4))

Conodonts