Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Lower and Middle Ordovician
Kinds of fossils: Conodonts
Quadrangle or area: Teller 1:250,000 quadrangle, Seward P.
Shipment No.: A-85-23f
Referred by: Dumoulin, Julie A. , Till, Allison
Report prepared by: Repetski, John , Harris, Anita G.
Date: 11/01/1985

Samples 6-30-85A through D were collected across the contact between the 01 and overlying 01sh units of Sainsbury. Samples from outcrops along west side of California River, 5.5 miles north of Port Clarence shoreline, sec. 1, T. 1 S, R. 38 W., lat. 65 deg. 25.9 min., long. 166 deg. 34.2 min., Teller B-4 quadrangle.

Samples 7-1-85A through E were collected in a traverse up a hill that starts in one klippe and end in an overlying klippe based on Sainsbury’s mapping. Collections in sec. 25, T. 2 N., R. 42 W., lat. 65 deg. 32.8 min., long. 167 deg. 18.5 min., Teller C-5 quadrangle.

Samples 7-1-85G through J are from a section that spans the contact between 01 and the overlying 0sh1 units of Sainsbury. Sec. 18, T. 1 N., R. 40 W., lat. 65 deg. 29.6 min., long. 167 deg. 04.5 min., Teller B-5 quadrangle.

Samples 7-3-85A through G are from a measured section in the 01 unit of Sainsbury (1969) along an unnamed creek between the Don and Lost Rivers, sec. 11, T. 1 S., R. 40 W., lat. 65 deg. 25.1 min., long. 167 deg. 01.5 min., Teller B-5 quadrangle.

Sainsbury’s 01 unit is, in its middle and lower(?) part, largely of low Fauna D (early Arenigian) age and was deposited on a shelf or platform under chiefly normal marine, though somewhat warm-water conditions. Where 01 is not separated by a fault from 01sh, the highest beds within 01 are of very earliest Middle Ordovician age and were deposited in slightly cooler water than underlying beds. The lower 50 m or so of the overlying 01sh unit were deposited during the very latest Arenigian or earliest Llanvirnian (=very earliest Middle Ordovician) in even cooler and deeper waters.

This finishes all the collections I made in 1985 and only about 10-15 samples collected by Dumoulin, Till, & Patton remain. These are still being processed. Now all I have to do is finish writing up the samples I collected on the Seward in 1984. I must be moving too slowly for life in the fast lane.

John E. Repetski, Anita G. Harris

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6-30-85D (10215-CO) , Teller , Collected 5.5 m below top of 01 unit. Medium-gray to light-brownish-gray, fine-grained, bioclastic, partly bioturbated dolostone in even to wavy beds 5-20 cm thick.
10 Drepanoistodus forceps (Lindstrom) elements
9 Drepanodus arcuatus Pander elements
3 Fryxellodontus? n. sp. elements
3 Paroistodus proteus (Lindstrom) elements
2 Protopanderodus cf. P.? n. sp. 2 of Repetski, 1982
1 Scolopodus filosus Ethington and Clark element
6 Scolopodus gracilis Ethington & Clark elements
3 scolopodiform elements
7 indet. simple cone fragments
6-30-85C (10216-CO) , Teller , From 1.5 m below top of 01 unit. Dark-gray, medium-dark-weathering, thick-bedded (beds 20 cm thick), brecciated (tectonic), very fine grained, fetid dolostone.
24 Drepanodus arcuatus Pander elements
15 Paltodus cf. P. inconstans Lindstrom elements
24 Paroistodus parallelus (Pander) elements
2 unassigned drepanodontiform elements
26 indet. simple cone fragments
6-30-85B , Teller , Collected about 300 feet north (upstream) from 6-30-85A and within 01sh. Argillaceous, laminated, carbonate mudrock in boudined beds as much as 30 cm thick; unit about 70% shale and 30% argillaceous carbonate.
6-30-85A , Teller , Boudins of dark-gray to medium-dark-gray, moderate-brown-weathering, calcareous argillite in beds 1/2-1 cm thick; some broken surfaces show possible fossil hash.
7-1-85E , Teller
7-1-85D (10217-CO) , Teller , At 1540 ft. elevation; small outcrop of irregularly thinly bedded (1-5 cm thick), brownish-gray, lime micrite; 01 unit of Sainsbury.
1 Scolopodus gracilis Ethington & Clark element
2 indet. simple cone fragments
7-1-85C (10218-CO) , Teller , At 1600 ft. elevation; brownish-gray, irregularly bedded (with argillaceous whisps), lime micrite that weathers medium dark gray to dark and pale yellow orange.
2 Drepanoistodus cf. D. forceps (Lindstrom) elements
7 Drepanodus arcuatus Pander elements
3 Paroistodus proteus (Lindstrom) elements
2 Protopanderodus? n. sp. 2 of Repetski, 1982 elements
17 Scolopodus gracilis Ethington & Clark elements
2 Scolopodus rex Lindstrom elements
23 indet. simple cone fragments
7-1-85B (10219-CO) , Teller , At 1740 ft. elevation; mottled to laminated, very fine grained, brownish-gray, grayish-orange-weathering lime mudrock in beds 5-15 cm thick.
9 Panderodus sp. element
1 Scandodus? sp. element
10 indet. simple cone and bar fragments
7-1-85A (10220-CO) , Teller , At 1830 ft. elevation; mottled, light-brownish-gray to grayish-red and grayish-orange pink, vuggy, fine- to very fine grained limestone in beds 5-15 cm thick. Beds even to slightly irregular; forms 1-2-m rib of good outcrop all along hilltop.
Erraticodon cf. E. balticus Dzik, 1M, 1 Sa, 1 Sb, & 2 Sc elements
15 Panderodus sp. elements
3 Scandodus sp. elements
19 indet. bar and simple cone fragments
7-1-85F , Teller , Flaggy to plately, slightly irregularly bedded (beds 1-7 cm thick), slightly bioturbated, medium-gray- to grayish- orange-weathering lime mudrock. Outcrop less than 10 m high and looks like same rock as measured in 1984 along Koteebue Creek; sec. 24, T. 2 N., R. 42 W., lat. 65 deg. 33.3 min., long. 167 deg. 17.8 min., Teller C-5 quadrangle.
1 indet. simple cone fragment
7-1-85G , Teller
7-1-85J (10221-CO) , Teller , At base of slope and 15-30 feet above 01/0sh1 contact, collected in frost boil. Dark-gray to gray-black, slightly mottled lime mudrock that weathers pale yellowish brown to grayish orange. This type of rock makes up 10-20% of unit at base; other 80-90% of unit is black to dark-gray calcareous shale.
3 "Oistodus" venustus Stauffer elements
Periodon aculeatus Hadding, 6 Pa, 5 Pb, 9 M, 1 Sa, 7 Sb, 9 Sc, & 1 Sd elements
4 Protopanderodus sp. indet. element fragments
2 Walliserodus ethingtoni (Fahraeus) elements
26 indet. bar, platform and simple cone fragments
7-1-85H (10222-CO) , Teller , At 1380 ft. elevation. Classical O1sh as described by Sainsbury. Even to slightly undulatory, thin- to medium-bedded (beds 2-10 cm thick), 99% dark-gray lime mudrock and 10% laminated to micro-crosslaminated, very argillaceous lime mudrock.
4 Paroistodus originalis (Sergeeva) elements
Periodon aculeatus Hadding, 1 Pa, 2 Pb, 5 M, & 1 Sb elements
14 indet. bar, platform and simple cone fragments
7-1-85I , Teller , Same rock type as 7-1-85H, but 4 m higher in the section.
7-3-85D (10223-CO) , Teller , At 1 m above base of section; brownish-medium-gray, slightly irregularly bedded (beds 2-10 cm thick) lime micrite that weathers pale red to light brownish gray.
7 Fryxellodontus? n. sp. elements
1 Protopanderodus cf. P. elongatus Serpagli element
1 Rossodus sp. element
7-3-85E (10224-CO) , Teller , At 43 m above base of section; fine-grained, brownish-medium-dark-gray, light-gray to pale-yellow-orange-weathering, pelloidal? packstone in beds 10-50 cm thick with faint mm laminations locally; may be slightly bioclastic.
117 Clavohamulus densus Furnish elements
4 Drepanoistodus pervetus Nowlan elements
10 Fryxellodontus? n. sp. elements
53 Rossodus n. sp. elements
1 Scolopodus cf. S. gracilis Ethington & Clark element
5 Teridontus sp. elements
+100 indet. simple cone fragments
7-3-85F (10225-CO) , Teller , At 60-62 m above base of section; bioclastic, pelloidal packstone in beds 30-40 cm thick.
13 Scolopodus floweri Repetski (primitive form) elements
1 drepanodontiform element
17 indet. simple cone fragments
7-3-85G (10226-CO) , Teller , At 60-62 m above base of section; same lithology as 7-3-85F but containing brachiopods and gastropods.
1 Scolopodus floweri Repetski (primitive form) element
7-3-85C (10227-CO) , Teller , At 73 m (flaot block) above base of section at 100 ft. elevation. Medium-dark-gray, 4-cm-thick irregular beds of micrite with tracks and trails and scattered small brachiopod valves.
1 suberectiform element of Drepanoistodus sp.
4 Drepanoistodus forceps (Lindstrom) elements
3 Fryxellodontus? n. sp. elements
10 Paltodus cf. P. subaequalis Pander elements
4 Paroistodus aff. P. amoenus (Lindstrom) elements
6 Rossodus n. sp. elements
2 Scolopodus gracilis Ethington & Clark elements
1 Scolopodus aff. S. rex Lindstrom element
1 indet. drepanodontiform
14 indet. simple cone fragments
7-3-85B (10228-CO) , Teller , At 90 m above base of section; 160 ft. elevation. Medium-dark-gray, moderate-yellow-brown-weathering, irregularly-medium-bedded (beds 7-15 cm thick) micrite with abundant tracks and trails and rare to very rare skeletal debris (echinoderms and gastropds).
1 Acanthodus lineatus (Furnish) element
2 acontiodiform elements
3 Drepanodus arcuatus Pander elements
19 Fryxellodontus? n. sp. elements
7 Oneotodus variabilis Lindstrom elements
4 Paltodus aff. P. bassleri Furnish elements
3 Paltodus subaequalis Pander elements
8 Paroistodus amoenus (Lindstrom) elements
24 Rossodus n. sp. elements
5 Scolopodus floweri Repetski elements
9 Scolopodus rex Lindstrom elements
4 Scolopodus? sp. elements
2 unassigned drepanodontiform elements
80 indet. simple cone fragments
7-3-85A (10229-CO) , Teller , At 140 m above base of section and 280 ft. elevation. Brownish-gray, pale-yellow-brown-weathering, lime micrite in beds 30 cm thick with probable faint scattered laminations.
1 Drepanodus aff. D. arcuatus Pander element
4 Drepanoistodus sp. elements
5 Fryxellodontus? n. sp. elements
6 Paltodus n. sp. elements
19 Paroistodus cf. P. parallelus (Lindstom) elements
6 Rossodus n sp. elements
3 Scolopodus floweri Repetski elements
2 Scolopodus gracilis Ethington & Clark elements
1 Scolopodus cf. S. propinquus (Furnish) element
4 Scolopodus rex Lindstrom elements
1 Scolopodus sp. element
23 indet. simple cone fragments
7-3-85H , Teller , Did not arrive, probably lost in mail.
7-3-85I (10230-CO) , Teller , Considerably downstream but still within Sainsbury's O1 unit; from west side of stream, dark-gray, light-gray-weathering, even- and thick-bedded (30-70 cm beds), very fine grained limestone to micrite containing rare bioclasts. From NE 1/4 sec. 14, T. 1 S., R. 40 W., lat 65 deg. 24.3 min., long. 167 deg. 00.8 min., Teller B-5 quadrangle.
1Rossodus n. sp. element
2 indet. drepanodontiform elements
2 indet. simple cone fragments