Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Lower Jurassic and early Middle Jurassic
Kinds of fossils: Mollusks
Quadrangle or area: Talkeetna Mountains
Shipment No.: A-61-10
Referred by: Imlay, Ralph W.
Report prepared by: Imlay, Ralph W.
Date: 05/23/1961

Enclosed is a complete listing of Lower Jurassic mollusks from the Talkeetna Mountains. A letter has been sent to John Wells at Cornell University concerning the Lower Jurassic corals. If he cannot find time to study them, we will try to find some other coral specialist to do so.

The stages of the Lower Jurassic that are represented in the Talkeetna Mountains are based on the European ranges of the ammonites that are present. These ranges and the probable ages of the various fossil collections are listed below. Perhaps with this information you can now determine the ages of the several units of the Talkeetna formation discussed in our recent letter of May 2nd. You will note that most of the collections containing ammonites are of late Toarcian age and that there is no fossil fossil evidence for the Hettangian.

European Ranges of Lower Jurassic Ammonites found in the Talkeetna formation of the Talkeetna Mountains.

Megarietites - Sinemurian, mostly lower
Arnioceras - Sinemurian, most lower
Oxynoticeras - Sinemurian to basal Pliensbachian, mostly upper Sinemurian
Crucilobiceras - upper Sinemurian into basal Pliensbachian
Radstockiceras - lower Pliensbachian
Uptonia - lower Pliensbachian
Acanthopleuroceras - lower Pliensbachian
Protogrammoceras - upper Pliensbachian to lower Turonian
Paltarpites - upper Pliensbachian
Amaltheus - upper Pliensbachian
Pleuroceras - upper Pliensbachian
Catacoeloceras - middle Toarcian
Harpoceras - top of Pliensbachian through Toarcian, but mostly lower & middle Toarcian
Pseudlioceras - middle Toarcian into basal Bajocian (zone of Harpoceras serpentinum to Lioceras opalinum
Phlyseogrammoceras - upper Toarcian
Phymatoceras - upper Toarcian
Haugia - upper Toarcian
Grammoceras upper Toarcian to early Bajocian

Probable ages of Lower Jurassic Fossil Collections from the Talkeetna Mountains

Lower Sinemurian - 24107, 27586
Upper Sinemurian or lower Pliensbachian - 6706, 26722, 24106
Lower Pliensbachian - 3698(?), 6697, 8569, 24108
Upper Pliensbachian - 25941
Lower Toarcian - 24787, 25938(?)
Upper Toarcian - 24109, 24111, 24114, 25316, 25317, 25318, 25319, 25342, 25359, 25939, 25940, 27508, 27509(?)

The basal sandstone of the Tuxedni formation is probably entirely of Bajocian age. In an attempt to determine if any part of it might be of Toarcian age, I examined the fossils from the following localities whiach labeled either as the basal sandstone or from the basal part of the Tuxedni formation.

Fossils from the Basal beds of the Tuxedni formation

[Note by RBB: a list follows of localities with fauna - see locality list]

In summation, the basal sandstone of the Tuxedni formation in the Talkeetna Mountains has furnished ammonites and Inoceramus of early to middle Bajocian age at six localities. The immature ammonite at Mes. loc. 24137 could be either of late Toarcian or early Bajocian age.

I wish that you would let me know if any of the other collections that you have submitted are from the basal sandstone of the Tuxedni formation as I should discuss the age of the basal part of the Tuxedni formation in my forthcoming paper on the Bajocian ammonites.

Also, I would like to have you prepare a very brief statement, or summary of the stratigraphy of the Tuxedni formation in the Talkeetna Mountains that I could use in my paper. You may recall from previous papers that I need a statement concering lithologic features, thicknesses, and stratigraphic positions of the fossils. I could quote your statement as written, or I could use your data in preparing a statement that has some bearing on the fossils. It would be presented as a written communication. I do not need such a statement before next Fall, but would like to have it by December. I am working on the general part of the manuscript now and should complete it by that time. I do not expect the fossil photographs to be available until then, although only about 100 more views are needed.


***
Brief statement of problem and remarks (from collector):
[NOTE by RBB: The back of the first page of the E&R has note stating: "Reexamination of fossil covery A. Grantz request for 1952, 1953, 1954, 1955, 1957, 1959(?)."]
User Note module to be added
53AGz21 (Mesozoic loc. 24781) , Anchorage , Arthur Grantz and L.F. Fay, 1953. Anchorage D-2 quad., Lat. 61 deg. 50'18" N., Long. 147 deg. 25'43" W., about 0.6 miles west from point where Camp Creek crosses Glenn Highway. Talkeetna formation.
Weyla sp.
Grammatodon sp.
Trigonia sp.
Astarte sp.
Protocardia sp.
Pteromya? sp.
53AGz33A (Mesozoic loc. 24782) , Anchorage , Arthur Grantz and L.F. Fay, 1953. Anchorage D-2 quad., Lat. 61 deg. 50'17"N., Long. 147 deg. 25'50"W., near loc. 24781 Talkeetna formation, upper part.
Astarte sp.
53AGz33B (Mesozoic loc. 24783) , Anchorage , Arthur Grantz and L.F. Fay, 1953. Anchorage D-2 quad., Lat. 61 deg. 50'17 1/2" N., Long. 147 deg. 25'47" W., near loc. 24782. Talkeetna formation, upper part.
Astarte sp.
Weyla sp.
Corbula? sp.
Parallelodon sp.
Pteromya? sp.
Brachiopods undetermined
Gastropods undetermined
53AGz33C (Mesozoic loc. 24784) , Anchorage , Arthur Grantz and L.F. Fay, 1953. Anchorage D-2 quad.., Lat. 61 deg. 50' 18" N., Long. 147 deg. 25' 36" W., near loc. 24782. Talkeetna formation, upper part.
Weyla sp.
Trigonia sp.
Pleurophorus? sp.
53AGz37 (Mesozoic loc. 24785) , Anchorage , A. Grantz and L. Fay, 1953. Anchorage D-2 quad., Lat. 61 deg. 50' 34" N., Long. 147 deg. 25' 36" W., about 0.6 miles up Camp Creek from where it crosses the Glenn Highway. Talkeetna formation, upper part.
Weyla sp.
Gryphaea sp.
Corals undetermined
53AGz39 (Mesozoic loc. 24786) , Anchorage , A. Grantz and L. Fay, 1953. Anchorage D-2 quad., Lat. 61 deg. 50' 42" N., Long. 147 deg. 25' 29" W., about one mile southwest of B.M. 3351 on Glenn Highway and 0.65 miles northwest of the point where Camp Creek crosses the Glenn Highway. Talkeetna formation, upper part.
Astarte sp.
Protocardia sp.
Grammatodon sp.
Entolium? sp.
Trigonia sp.
Brachiopods undetermined
Gastropods undetermined
53AGz40 (Mesozoic loc. 24787) , Anchorage , A. Grantz and L. Fay, 1953. Anchorage D-2 quad., Lat. 61 deg. 50' 53" N., Long. 147 deg. 24' 43" W., about 0.6 miles southwest of point where Camp Creek crosses the Glenn Highway and about 0.56 miles northwest of B.M. 3351. Talkeetna formation, upper part. [Arthur Grantz and L.F. Fay, 1953. About 0.6 mile (1 km) northwest of point where Camp Creek crosses Glenn Highway, lat 61 deg. 50'53" N, long. 147 deg. 24'43" W., Anchorage (D-2) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation. Early Toarcian (from Imlay, 1981, p. 26)]
Catacoeloceras cf. C. crassesens (Simpson)
53AGz243 (Mesozoic loc. 24788) , Talkeetna Mts , Arthur Grantz and L.F. Fay, 1953. Talkeetna Mountains A-2 quad., Lat. 62 deg. 10' 56" N., Long. 147 deg. 38' 23" W., Talkeetna formation, upper part.
Weyla sp.
Chlamys sp.
52AGz11 (Mesozoic loc. 24105) , Anchorage , Recollection of 49AEC136 (Mes. loc. 22124) from 1.42 miles N 40 degrees E of B.M. 2649 (Glen West Base). About 122 road miles northeast of Anchorage. From tuffaceous shale, silts, and sands. Talkeetna formation. Anchorage D-2 quad. Collectors: R.D. Hoare, R.W. Imlay and Arthur Grantz, 1952.
Vetulonaia sp.
52AGz61 (Mesozoic loc. 24106) , Anchorage , Hoare, Imlay, and Grantz, 1952. Anchorage D-2 quad., on south tributary of Squaw Creek, 2.02 miles N 28 1/2 degrees E of southeast summit of Gunsight Mountain. Talkeetna formation.
Oxynoticeras? sp.
Meleagrinella sp.
Astarte sp.
52AGz63 (Mesozoic loc. 24107) , Anchorage , Hoare, Imlay and Grantz, 1952. Anchorage D-2, on south tributary of Squaw Creek, 1.98 miles N 28 1/2 degrees E of southeast summit of Gunsight Mountain. Talkeetna formation. [R.D. Hoare, R.W. Imlay, and Arthur Grantz, 1952. On south tributary of Squaw Creek, 1.98 miles (3.2 km) N. 28 1/2 deg. E of southeast summit of Gunsight Mountain. Anchorage (D-2) quad. Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Pliensbachian. (description from Imlay, 1981, p. 26)]
Gryphaea sp.
Nuculana? sp.
Oxynoticeras? sp.
Arnioceras cf. A. semicostatum (Young and Bird)
52AGz66 (Mesozoic loc. 24108) , Anchorage , Grantz, Hoare and Imlay, 1952. Anchorage D-2 quad., on south tributary of Squaw Creek, 1.91 miles N 28 1/2 degrees E. of southeast summit of Gunsight Mountain. Talkeetna formation. [Arthur Grantz, R.D. Hoare, and R.W. Imlay, 1952. Differs from USGS Mesozoic loc. 24107 by being 1.91 miles (3.1 km) N. 28 1/2 deg. E. of southeast summit of Gunsight Mountain. Late Pliensbachian (description from Imlay, 1981, p. 26)]
Neithea cf. N. unca Phillips
Ostrea sp.
Pleuromya sp.
Chlamys sp.
Protocardia sp.
Astarte sp.
Ceromyopsis sp.
Vaugonia sp.
Uptonia
Lytoceras
Radstockiceras cf. R. wiltshirei (Wright)
Oxynoticeras sp.
Protogrammoceras? sp.
52AGz92 (Mesozoic loc. 24109) , Talkeetna Mts , Grantz, Hoare and Imlay, 1952. Talkeetna Mountains A-1 quad., Albert Creek, 3.15 miles N 75 W of its mouth. Talkeetna formation.
Grammoceras sp.
Eucyclus? sp.
52AGz253 (Mesozoic loc. 24111) , Anchorage , Grantz, Hoare and Imlay, 1952. Anchorage D-2 quad., 5.04 miles N 33 degrees E of mouth of Sheep Creek. Talkeetna formation. [Arthur Grantz, R.D. Hoare, and R.W. Imlay, 1952. 5.04 miles (8 kms) N. 33 deg. E. of the mouth of Sheep Creek. Anchorage (D-2) quadrangle, Talkeetna Mountains, southern Alaska. Early Toarcian. (description from Imlay, 1981, p. 26)]
Haugia sp.
Ostrea sp.
Astarte sp.
52AGz98 (Mesozoic loc. 24114) , Talkeetna Mts , Grantz, Hoare and Imlay, 1952. Talkeetna Mountains A-1 quad., north branch of North Creek, 1.61 miles N 45 degrees W of mouth of North Creek. Talkeetna formation, hard siltstone probably transitional into Tuxedni formation. [Arthur Grantz, R.D. Hoare, and R.W. Imlay, 1952. From north branch of North Creek, 1.61 miles (2.5 km) N. 45 deg. W. of its mouth. Talkeetna Mountains (A-1) quadrangle, southern Alaska. Talkeetna Formation. Late Toarcian (description from Imlay, 1981, p. 26)]
Haugia aff. H. compressa Buckman
Haugia sp.
52AGz240 (Mesozoic loc. 24235) , Anchorage , Sheep Creek, 2.20 miles N 16 1/2 degrees E of its mouth. Sandstone float from Tuxedni Formation.
Erycites howelli (White)
52AGz244 (Mesozoic loc. 24122) , Anchorage , 3.41 miles N 58 degrees E of mouth of Sheep Creek. Probably basal part of Tuxedni Formation. (from Imlay E&R report, 1/21/53)
Nerinea sp.
Inoceramus cf. I. lucifer Eichwald
52AGz280 (Mesozoic loc. 24136) , Anchorage , 0.23 miles N 61 degrees W of mouth of Pass Creek. Basal sandstone of Tuxedni Formation.
Isognomon
Trigonia
Volsella
Thracia
52AGz284 (Mesozoic loc. 24137) , Anchorage , Pass Creek, 0.53 miles S 74 1/2 degrees E of its mouth. Basal sandstone of the Tuxedni Formation.
Grammoceras? sp. juv.
Myophorella sp.
Trigonia sp.
Pholadomya sp.
52AGz286 , Anchorage , 1150 feet S 5 1/2 W of mouth of Pass Creek on a southeast tributary of Alfred Creek. Basal sandstone of Tuxedni Formation.
Meleagrinella sp.
52AHr51 (Mesozoic loc. 24176) , Anchorage , Pass Creek, 0.35 miles above its mouth. Basal sandstone of Tuxedni Formation. (description from Imlay E&R report of 01/21/1953)[Imlay, 1964, p. B22 provides following description: "Richard Hoare, 1952. Anchorage (D-2) quad., Pass Creek, 0.35 mile above its mouth. Basal sandstone of the Tuxedni Formation, 100-200 ft. above base."]
Inoceramus lucifer Eichwald
Holcophylloceras
52AHr51A (Mesozoic loc. 24177) , Anchorage , Float in side gully near loc. 52AHr51. Basal sandstone of Tuxedni Formation.
Inoceramus lucifer Eichwald
55AGz116a (Mesozoic loc. 25937) , Valdez , Arthur Grantz, 1955. Valdez D-8 quad., 61 deg. 50'45" N, 146 deg. 51'30" W., Coordinates 4.61-6.62. Talkeetna formation.
Trigonia sp.
Chlamys sp.
55AGz145 (Mesozoic loc. 25938) , Talkeetna Mts , Arthur Grantz, 1955. Talkeetna Mtns. A-3 quad., 62 deg. 13'39" N., 148 deg. 01'13" W., Coordinates 15.52-15.56. Talkeetna formation.
Harpoceras? sp.
Isocardia sp.
Weyla alata (von Buch)
55AGz182 (Mesozoic loc. 25939) , Valdez , Arthur Grantz, 1955. Valdez D-8 quad., 61 deg. 54'02" N., 146 deg. 52'00" W. [Note by RBB: locality description from Grantz's 1955 transmittal sheet gives a differing Lat. of 61 deg. 54'34" N., versus that above which is from an Imlay E&R dated 5/23/61]--[Arthur Grantz, 1955. Lat. 61 deg. 54'02"N., long. 146 deg. 52'00"W., Valdez (D-8) quadrangle, south side of western Copper River basin, southern Alaska. Talkeetna Formation. Late Toarcian. (description from Imlay, 1981, p. 25)]
Grammoceras sp.
55AGz294 (Mesozoic loc. 25941) , Anchorage , Arthur Grantz, 1955. Anchorage D-1 quad., Lat. 61 deg. 51'51" N., Long. 147 deg. 21'22" W., at east end of Sheep Mountain. Talkeetna formation, upper part. [Grantz's 1955 transmittal form contain the penciled-in coordinates of 0.62-7.87]--[Arthur Grantz, 1955. Lat. 61 deg. 51'51" N., long 147 deg. 21'22" W., at east end of Sheep Mountain. Anchorage (D-1) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation, upper part. Late Pliensbachian. (description from Imlay, 1981, p. 26)]
Pleuroceras cf. P. spinatum (Bruguiere)
Amaltheus sp.
Paltarpites cf. P. platypleurum (Buckman)
Harpoceras cf. H. elegans (Sowerby)
55AGz228a (Mesozoic loc. 25940) , Talkeetna Mts , Arthur Grantz, 1955. Talkeetna Mts. A-1 quad., Lat. 62 deg. 01'37" N., 147 deg. 17'53" W. Upper part of Talkeetna Formation. [Note by RBB: Grantz's transmittal sheet gives differing Lat. and Long. of: Lat. 62 deg. 01'21" N., 147 deg. 17'49" W., slightly differing from that given above which was taken from Imlay E&R of 5/23/61]--[Arthur Grantz, 1955. Lat 62 deg. 01'37" N., long 147 deg. 17'53" W., Talkeetna Mountains (A-1) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Toarcian. (description from Imlay, 1981, p. 26)]
Haugia sp.
54AGz48A (Mesozoic loc. 25316) , Talkeetna Mts , Art Grantz and L.F. Fay, 1954. Talkeetna Mtns. A-1 quad., Lat. 62 deg. 00' 42" N., Long. 147 deg. 27' 49" W., Talkeetna formation. [Arthur Grantz and L.F. Fay, 1954. Lat 62 deg. 00'42" N., long 147 deg. 27'49" W., Talkeetna Mountains (A-1) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation, upper part. Late Toarcian. (from Imlay, 1981, p. 26)]
Haugia sp.
54AGz49A (Mesozoic loc. 25317) , Talkeetna Mts , Art Grantz and L.F. Fay, 1954, Talkeetna Mtns. A-2 quad., Lat. 62 deg. 00'06"N., Long. 147 deg. 31'30"W., Talkeetna formation, upper part. [Arthur Grantz and L.F. Fay, 1954. Lat 62 deg 00'06" N., long 147 deg. 31'30" W., Talkeetna Mountains (A-1) quadrangle, Talkeetna Mountains, southern Alaska. Upper part of Talkeetna Formation. Late Toarcian. (from Imlay, 1981, p. 26)]
Phymatoceras sp.
Pseudolioceras sp.
Belemnite undetermined
54AGz50 (Mesozoic loc. 25318) , Talkeetna Mts , Arthur Grantz and L.F. Fay, 1954. Talkeetna Mtns. A-2 quad., Lat. 62 deg. 00'10"N., Long. 147 deg. 32'33"W., Talkeetna formation. [Arthur Grantz and L.F. Fay, 1954. Lat 62 deg. 00'10" N., long. 147 deg. 32'33" W., Talkeetna Mountains (A-2) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Toarcian. (from Imlay, 1981, p. 26)]
Haugia cf. H. variabilis (d'Orbigny)
54AGz51 (Mesozoic loc. 25319) , Talkeetna Mts , Art Grantz and L.F. Fay, 1954. Talkeetna Mtns. A-2 quad., Lat. 62 deg. 00'00 1/2"N., Long. 147 deg. 32'45"W. [Arthur Grantz and L.F. Fay, 1954. Lat 62 deg. 00'00 1/2" N., long 147 deg. 32'45" W., Talkeetna Mountains (A-2) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Toarcian. (from Imlay, 1981, p. 26)]
Haugia sp.
Phlyseogrammoceras? sp.
54AFy24 (Mesozoic loc. 25342) , Talkeetna Mts , L.F. Fay, 1954. Talkeetna Mtns. A-1 quad., Lat. 62 deg. 02'48"N., Long. 147 deg. 29'34"W. Talkeetna formation. [L.F. Fay, 1954. Lat 62 deg. 02'48" N., long 147 deg. 29'34" W., Talkeetna (A-1) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Torcian. (from Imlay, 1981, p. 26)]
Phymatoceras sp.
54AFy130 (Mesozoic loc. 25359) , Talkeetna Mts , L.F. Fay, 1954. Talkeetna Mtns. A-1 quad., Lat. 62 deg. 02'40"N., Long. 147 deg. 21'36"W. [L.F. Fay, 1954. Lat 62 deg. 02'40" N., long 147 deg. 21'36" W., Talkeetna Mountains (A-1) quadrangle, Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Toarcian. (from Imlay, 1981, p. 26)]
Haugia sp.
Isocyprina? sp.
Tancredia sp.
49AEC136 (Mesozoic loc. 22124) , Anchorage , None given on E&R form of Imlay 1950. [Transmittal form of Eckhart cites it as "Gypsiferous deposit near Sheep Mountain Inn on Glen Allen Highway. Approximately 112 miles east of Anchorage, Alaska." "Jurassic (?) black shale (Tuffaceous). "Sheep Mountain." "NW1/4, of NE1/4, 602." "Sheep Mountain" Collector: R.A. Eckhart, p. 98 of 1949 notebook, date 7/10/49 [Grantz letter of May 2, 1961 states locality is in Anchorage D-2 quad. and situated 1.42 miles N. 40 degrees E. of B.M. 2649 (Glen West Base) with coordinates of 7.75 -4.85]
Vetulonaia sp.
52AGz232 (Mesozoic loc. 24148) , Anchorage , not given in Imlay E&R of 5/23/61
Colonial coral undetermined
52AGz233 (Mesozoic loc. 24149) , Anchorage , not given in Imlay E&R of 5/23/61 [USGS Washington, D.C. Mesozoic fossil locality register provides following description: "Float at loaclity 231, USGS #24230"]
Pleydellia? cf. P. digna Buckman
Chlamys? sp.
55AGz229A (Mesozoic loc. 25943) , Talkeetna Mts , Not given in Imlay E&R of 11/28/55 or 5/23/61, however, transmittal sheet of Grantz (Oct. 28, 1955) states: "Talkeetna Mtns. (A-1) 62 deg. 01'37" N, 147 deg. 17'53" W. Lower Tuxedni formation or upper Talkeetna formation" (coordinates of 6.56-1.86 penciled in)
Plagiostoma
Meleagrinella
gastropod undetermined
55AGz309 (Mesozoic loc. 25946) , Anchorage , Not given in Imlay E&R of 11/28/55 or 5/23/61, however, transmittal sheet of Grantz (Oct. 28, 1955) states: "Anchorage (D-2) 61 deg. 57'47" N, 147 deg. 24'21" W. Tuxedni formation." (coordinates of 11.20-14.76 penciled in) [Imlay, 1964, USGS Prof. Paper 318-B, p. B22 provides the following description: "Arthur Grantz, 1955. Anchorage (D-2) quad., lat 61 deg. 57'47" N., long 147 deg. 24'21" W. Tuxedni Formation, 200-300 ft above base."]
Emileia? ...
or Docidoceras? sp. juv.
Inoceramus cf. I. lucifer Eichwald
6AK201 (Mesozoic loc. 3698) , Anchorage , Adolf Knopf, 1906. Tahneta Range, head of Matanuska River. Tuffs associated with lavas and coarse pyroclastics. Talkeetna Formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-2 quad. (same general locality as Mes. locs. 24106, 24107, and 24108. 1.91 to 2.02 miles N. 28 1/2 deg. E. of southeast summit of Gunsight Mountain. Talkeetna fm. - 10.3-8.25]; Tributary to Squaw Creek heading under 6,375-foot peak at east end of Sheep Mountain. Fossiliferous tuff associated with lave and coarse pyroclastic rocks. Adolph Knopf, 1906. (description from Martin, 1926, p. 223)
Rhynchonellid brachiopods
Weyla sp.
Acanthopleuroceras? sp.
Pleuromya sp.
Myophorella sp.
Oxynoticeras? sp.
Lima (Plagiostoma) sp.
Entolium? sp.
Isocardia sp.
G.C. Martin (unnumberedA)-Aug. 30, 1910 (Mesozoic loc. 6693) , Anchorage , G.C. Martin, 1910. Creek entering Chickaloon River from west 1 mile above Government Brige at elevation of 2200 feet. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 2.85 -9.35]; Creek entering Chickaloon River from west 1 mile above Government Bridge, altitude 2,200 feet. G.C. Martin, 1910. (description from Martin, 1926, p. 223)
Rhynchonellid brachiopods
Chlamys? sp.
Entolium? sp.
Weyla sp.
G.C. Martin (unnumberedB)-Aug. 30, 1910 (Mesozoic loc. 6697) , Anchorage , Doone Creek at mouth of gulch, 3950 foot point on traverse of Aug. 30. Float. Talkeetna formation. [Doone Creek, at mouth of gulch, 3,950-foot point on traverse of August 30. Float. G.C. Martin, 1910. (description from Martin, 1926, p. 222)
Trigonia? sp.
Entolium? sp.
Weyla sp.
Eopecten? sp.
Belemnite fragment
Crucilobiceras cf. C. subtriangulare Young and Bird
Uptonia sp.
"USGS Mesozoic loc. 6706" (Mesozoic loc. 6706) , Anchorage , A.H. Brooks, 1910. Creek entering Chickaloon River from west one mile above Government Bridge at elevation of 2000 feet. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 3.0 -9.0]; Creek entering Chickaloon River from west 1 mile above Government Bridge, altitude 2,000 feet. G.C. Martin, 1910. (description from Martin, 1926, p. 223)
Entolium? sp.
Weyla sp.
Crucilobiceras
G.C. Martin 1910 (unnumberedC)-Aug. 30, 1910 (Mesozoic loc. 6707) , Anchorage , G.C. Martin. Float from base of falls on creek entering Chickaloon River from west one mile above Government. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 2.85 -9.35]; Creek entering Chickaloon River from west 1 mile above Government Bridge. Float from base of falls. G.C. Martin, 1910. (description from Martin, 1926, p. 223)
Rhynchonellid brachiopods
Ostrea sp.
Weyla sp.
Brooks & Martin 1910 (unnumberedA)-Aug. 30, 1910 (Mesozoic loc. 6708) , Anchorage , Float above falls on creek entering Chickaloon River from west one mile above Government Bridge. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 2.85 -9.35]; Creek entering Chickaloon River from west 1 mile above Government Bridge. Float above falls. G.C. Martin, 1910. (description from Martin, 1926, p. 223)
Entolium? sp.
Astarte sp.
Ceromyopsis? sp.
Brooks & Martin 1910 (unnumberedB)-Aug. 30, 1910 (Mesozoic loc. 6709) , Anchorage , A.H. Brooks and G.C. Martin, 1910. Creek entering Chickaloon River from west one mile above Government Bridge at altitude of 2200 feet. Talus collection but probably from bed of stream as a large collection was made at this place. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 2.85 -9.35]; Creek entering Chickaloon River from west 1 mile above Government Bridge. Talus at altitude 2,200 feet. G.C. Martin, 1910. (description from Martin, 1926, p. 223)
Cardinia? sp.
G.C. Martin 1913 (unnumbered)-coll. by prospector (Mesozoic loc. 8561) , Anchorage , G.C. Martin, 1913. Near head of Boulder Creek. Collected by a prospector. [Grantz letter of May 2, 1961 states locality is in either Anchorage D-3 or D-4 quads.]; Near head of Boulder Creek. Collected by prospector. (description from Martin, 1926, p. 223)
Weyla sp.
G.C. Martin 1913 (unnumbered)-July 30, 1913 (Mesozoic loc. 8564) , Anchorage , Float from tributary entering Boulder Creek from southeast next below East Fork. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 10.7 -8.7]
Corals undetermined
J.B. Mertie 1913 (unnumbered)-July 31, 1913 (Mesozoic loc. 8565) , Anchorage , J.B. Mertie, July 31, 1913. Float from 7630 feet up the next to lowest Creek entering the East Fork of Boulder Creek from south. Sandstone and shale interbedded with tuff. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-3 quad. with the coordinates of 1.1 -8.2]; Same creek as 6698, about 1 1/4 miles above mouth. J.B. Mertie, 1913. (description from Martin, 1926, p. 223)
Pelecypod fragments
Martin, Mertie and Overbeck 1913 (unnumberedA)-Aug. 16, 1913 (Mesozoic loc. 8569) , Anchorage , Martin, Mertie and Overbeck, Aug. 16, 1913. Float from black limestone at mouth of creek on west side of Chickaloon River 3 miles above Government Bridge. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 4 to 5 - 10.0]; West side of Chickaloon River at mouth of creek, 3 miles above Government Bridge. Black limestone float. G.C. Martin, 1913. (description from Martin, 1926, p. 223)
Rhynchonellid brachiopods
Gryphaea sp.
Ostrea (Catinula) sp.
Pholadomya sp.
Chlamys sp.
Entolium? sp.
Eopecten sp.
Gervillia sp.
Cardinia sp.
Protocardia sp.
Gastropod undetermined
Uptonia sp.
Crucilobiceras sp.
Martin, Mertie and Overbeck 1913 (unnumberedB)-Aug. 16, 1913 (Mesozoic loc. 8570) , Anchorage , Martin, Mertie and Overbeck, Aug. 16, 1913. Breccia float at loc. 8569 [Grantz letter of May 2, 1961 states locality is in Anchorage D-4 quad. with the coordinates of 4 to 5 - 10.0]; Same as 8569. Breccia float. G.C. Martin, 1913. (description from Martin, 1926, p. 223)
Ostrea sp.
Weyla sp.
Eopecten sp.
Martin and Overbeck 1913 (unnumbered)-Aug. 31, 1913 (Mesozoic loc. 8589) , Anchorage , Martin and Overbeck, Aug. 31, 1913. Sheep Mountain at altitude of 3900 feet on creek flowing southeast from 6375- foot peak. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-2 quad. with the coordinates of 10.52 - 6.45]; Sheep Mountain, altitude 3,400 feet, on creek flowing southeast from 6,375-foot peak. G.C. Martin, 1913. (description from Martin, 1926, p. 223)
Rhynchonellid brachiopod
Protocardia sp.
Grammatodon sp.
Ostrea sp.
Entolium? sp.
14AC5 (Mesozoic loc. 8949) , Anchorage , Theodore Chapin, 1914. South end of knob northeast of northeast end of Sheep Mountain. Talkeetna formation. [Grantz letter of May 2, 1961 states locality is in Anchorage D-1 or D-2 quad. with the coordinates in the vicinity of 12 - 7.5]
Chlamys sp.
Grammatodon? sp.
Pleuromya? sp.
57AGz30 (Mesozoic loc. 26772) , Talkeetna Mts , Arthur Grantz, 1957. Talkeetna Mountains A-2 quad., Lat. 62 deg. 59'58" N., Long. 147 deg. 57'48"W., Coordinates 1.20-17.23. Talkeetna formation. Possibly on a landslide or rubble mass. [Arthur Grantz, 1957. Lat. 62 deg. 59'58" N., long 147 deg. 57'48" W., Coordinates 1.20-17.23. Talkeetna Moutains (A-2) quadrangle. Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Sinemurian. (description from Imlay, 1981, p. 26)]; [USGS Mesozoic loc. 26722. Talkeetna Mountains A- 2 quadrangle, coordinates 1.20, 17.23, lat 62°59'58" N., long 147°57'48" W. ... Crucilobiceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Lower Jurassic-Talkeetna fm. 57-AGz-30. Talkeetna (A-2). Coords. 1.20-17.23. Lat. 62°59'58" N. Long. 147°57'48" W. Possibly landslide. Coll. Grantz, 1957]
Crucilobiceras sp. juv.
52AGz230 (Mesozoic loc. 24225) , Anchorage , Grantz, Hoare and Imlay, 1952. Anchorage D-2 quad., Sheep Creek, 2.86 miles N 9 1/2 deg. E of its mouth.
Trigonia sp.
Astarte sp.
Thracia sp.
Pleuromya sp.
Isocyprina? sp.
Gastropod undetermined
52AGz231 (Mesozoic loc. 24230) , Anchorage , On a small tributary, Anchorage D-2 quad., 2.97 miles N. 9 deg. E. of the mouth of Sheep Creek.
Trigonia sp.
Camptonectes? sp.
57AGz114 (Mesozoic loc. 26721) , Anchorage , Arthur Grantz, 1957. Anchorage D-1 quad., Lat. 61 deg. 51'01" N., Long. 147 deg. 07'48" W., Coordinates 8.05-6.96. Talkeetna formation.
Rhynchonellid brachiopods
6-7BMB General Petrol. Corp. 1959 (Mesozoic loc. 27507) , Anchorage , General Petroleum Corp. 1959. Anchorage D-2 quad., Coordinates 10.52-6.42. Upper Camp Creek. Dark olive gray Talkeetna formation.
Gastropod undetermined
Worm tube
Keeled ammonite undeterminable
6-10BMB General Petrol. Corp. 1959 (Mesozoic loc. 27508) , Talkeetna Mts , General Petroleum Corp., 1959. Talkeetna Mountains A-2 quad., Coordinates 20.54 - 0.52. Near head of McDougall Creek. Brown sandstone and shale. Talkeetna? formation. [General Petroleum Corp., 1959. Near head of McDougall Creek. Coordinates 15.9-0.37. Talkeetna Mountains (A-2) quadrangle. Talkeetna Mountains, southern Alaska. Talkeetna Formation. Late Toarcian. (description from Imlay, 1981, p. 26)]
Haugia cf. H. variabilis (d'Orbigny)
Coelastarte sp.
6-8BMB General Petrol. Corp. 1959 (Mesozoic loc. 27509) , Talkeetna Mts , General Petroleum Corp., 1959. Talkeetna Mountains A-1 quad., Coordinates 22.4 - 0.58. On ridge one mile southeast of junction of Crooked Creek and North Creek. Sandstone, dark gray-green, platy, indurated, fine to coarse-grained. Talkeetna Formation.
Weyla sp.
Grammatodon sp.
Chlamys sp.
cf. Haugia
Rhynchonellid brachiopods
13177-2 Standard Oil California (Mesozoic loc. 27586) , Anchorage , Standard Oil California. Carbon Creek, 2.3 miles S. 7 deg. E. of its mouth which enters the Matanuska River from the south near the mouth of Chickaloon River. Hard Siltstones. Talkeetna formation.
Megarietites sp.
Arnioceras sp.
Oxynoticeras? sp.
Modiolus sp.
Ceromyopsis? sp.
Lima sp.
Ostrea? sp.