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.
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Report prepared by: |
Imlay, Ralph W.
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Date: |
05/23/1961 |
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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.
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*** 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(?)."]
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User Note module to be added |
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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.
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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.
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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.
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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.
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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.
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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.
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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)]
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Catacoeloceras cf. C. crassesens (Simpson)
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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.
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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.
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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.
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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)]
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Arnioceras cf. A. semicostatum (Young and Bird)
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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)]
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Neithea cf. N. unca Phillips
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Radstockiceras cf. R. wiltshirei (Wright)
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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.
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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)]
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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)]
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Haugia aff. H. compressa Buckman
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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)
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Inoceramus cf. I. lucifer Eichwald
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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.
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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."]
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Inoceramus lucifer Eichwald
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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.
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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.
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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)]
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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)]
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Pleuroceras cf. P. spinatum (Bruguiere)
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Paltarpites cf. P. platypleurum (Buckman)
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Harpoceras cf. H. elegans (Sowerby)
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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)]
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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)]
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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)]
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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)]
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Haugia cf. H. variabilis (d'Orbigny)
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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)]
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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)]
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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)]
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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]
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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"]
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Pleydellia? cf. P. digna Buckman
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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)
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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."]
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Inoceramus cf. I. lucifer Eichwald
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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)
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Rhynchonellid brachiopods
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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)
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Rhynchonellid brachiopods
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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)
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Crucilobiceras cf. C. subtriangulare Young and Bird
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"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)
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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)
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Rhynchonellid brachiopods
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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)
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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)
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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)
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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)
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Rhynchonellid brachiopods
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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)
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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)
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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]
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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]
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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.
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Rhynchonellid brachiopods
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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)]
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Haugia cf. H. variabilis (d'Orbigny)
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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.
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Rhynchonellid brachiopods
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