Report on Referred Fossils |
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| Stratigraphic range: |
Lower Jurassic |
| Kinds of fossils: |
Ammonites |
| Quadrangle or area: |
, Alaska and Kenai Peninsula |
| Shipment No.: |
A-76-42 |
| Referred by: |
Detterman, Robert L.
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| Report prepared by: |
Imlay, Ralph W.
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| Date: |
12/23/1976 |
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Enclosed are lists of Lower Jurassic ammonite genera and species present at Wide Bay, Puale Bay and Alinchak Bay on the Alaska Peninsula and near Seldovia on the Kenai Peninsula. All known ammonite localities of age significance are listed under the stages Hettangian, Sinemurian, and Toarcian. In northwest Europe Psiloceras is characteristic of the lower, Waehneroceras of the middle, and Schlothemia of the upper Hettangian. At Puale Bay the genus Schlotheimia is represented by only one specimen that is preserved in a reddish brown matrix. Associated fossils (Mesozoic loc. 10820) are preserved in a gray matrix and are represented mostly by the genus Paracaloceras which current studies show that Schlotheimia was collected from a different bed or unit than the other ammonites, and that its stratigraphic position and faunal characteristics need checking. Mesozoic loc. 10820, according to Capps (Bull. 739, p. 94), is 1 1/3 miles northwest of the mouth of Puale Bay in the lower part of a sequence of pebbly sandstone that contains many grains of red jasper and greenstone and large fragments of carbonaceous shale. If the distance of 1 1/3 miles is correct it should be at the same position as ROC locs. 1240 and 1241. It could, however, be as much as 240-280 feet higher in the lower part of a sequence of massive tuffaceous sandstone. The genus Arnioceras at Puale Bay occurs in the upper part of the tuffaceous sandstone well above the beds containing Paracaloceras. I will attempt to locate these fossil localities on the map and section prepared by Kellum et al (1944) and then send copies to you for final checking before we see the sequence again next summer.
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| User Note module to be added |
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No Data
, Ugashik
, Richfield Oil Co. - Wide Bay test well No. 1, core 5 at depth of 2235-2236 ft. on north side of Wide Bay, Alaska. (description from Imlay E&R report of 12/23/76); Richfield Oil Co. Wide Bay test well 1, core 5 at depth of 2,235 to 2,236 feet, on north side of Wide Bay, Alaska Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)
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Waehneroceras cf. W. portlocki (Wright)
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44AKmF76
(Mesozoic loc. 19804)
, Karluk
, About 2 miles NNW of Chinik Point, 9500 feet N. 20 deg. W. of Cape Kekurnoi, and about 1000 feet north of northernmost large waterfall. About 1270 feet below massive conglomerate and 30 feet above massive tuffaceous conglomeratic sandstone (from Imlay E&R report, 5/26/71) [Imlay, 1981, USGS Prof. Pap. 1148, p. 28 gives following locality description: L.B. Kellum, S.N. Daviess, and C.M. Swinney, 1944. On northeast shore of Puale Bay about 2 miles (3.2 km) north-northwest of Chignik Point and 1,000 ft (305 m) north of northernmost large waterfall. Karluk (C-4 and C-5) quadrangles, Alaska Peninsula. In dark-gray shale 30 ft (9 m) above base of Kialagvik Formation. Near middle of Toarcian.]; [USGS Mesozoic loc. 19804. East shore of Puale Bay about 9,500 feet northwest of Cape Kekurnoi, Alaska Peninsula. Haugia. (description from Imlay and Detterman, 1973, p. 23)]; [[USGS Mes. Cat.: Lower Jurassic. Orig. No. 44AKm F76. SW Alaska, Kanatak District, Paule (SIC) Bay area, northeast shore of Paule Bay, about 2 miles NNW of Chinik Point, approximately 1000 ft beyond large waterfall and 9500 ft N20°W of the most eastern point of Cape Kekurnoi. 1060 ft above base of Jurassic and 30 ft above top of Mosuir cg. sand.]
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Haugia cf. H. grandis Buckman
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Haugia cf. H. compressa Buckman
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S.R. Capps, 1921, 1-127
(Mesozoic loc. 10820)
, Karluk
, Capps (1923, USGS Bulletin 739-C, p. 94) states: North shore of Cold Bay, 1 1/3 miles northwest of mouth of bay. [Imlay E&R report of 5/26/71 states: About 1-1/3 miles northwest of mouth of Puale Bay. [Imlay, 1981, USGS Prof. Paper 1148, p. 27 gives following locality description: S.R. Capps, 1921. Northeast shore of Puale Bay about 1 1/3 miles (1.8 km) northwest of Chignik Point. Contains Paracaloceras as at Mesozoic loc. 12396 and ROC loc. 1241 but also contains one specimen of Schlotheimia preserved in a different matrix and some Late Triassic mollusks. Unnamed beds. Early Sinemurian (mostly). Some late Hettangian and Late Triassic.][North shore of Cold Bay 1 1/3 miles northwest of mouth of Bay. S.R. Capps, 1921. (description from Martin, 1926, p. 186)]
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Paracaloceras rursicostatum Frebold
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ROC 1303
, Karluk
, From point about 2700 feet S. 12 deg. E. of VABM 119 Bay. From massive gray sandstone (from Imlay E&R report, 5/26/71). [Imlay, 1981, USGS Prof. Paper 1148, p. 28 gives following locality description: W.T. Rothwell and associates, 1962. Same general location as Mesozoic loc. 19804. At point about 2,700 ft (823 m) S. 12 deg. E. of VABM 119 Bay. From unit of massive sandstone 160 ft. (49 m) thick underlying the Kialagvik Formation. Unnamed beds. Sinemurian.]
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48AI112
(Mesozoic loc. 21237)
, Karluk
, Northeast shore of Puale Bay, 1.63 miles N. 22 deg. W. of Cape Kekurnoi, a little south of large waterfall. Float from light gray sandstone probably exposed about 700 feet above base of conglomeratic tuffaceous sandstone and 340 feet below top. (from Imlay E&R report of 5/16/71) [Imlay, 1981, USGS Prof. Paper 1148, p. 28 gives following locality description: R.W. Imlay and D.J. Miller, 1948. Northeast shore of Puale Bay, Alaska Peninsula, 1.63 miles (2.6 km) N. 22 deg. W. of Chignik Point. Float probably from light-gray sandstone exposed in cliffs about 340 ft (103 m) below base of Kialagvik Formation. Unnamed beds. Early to early late Sinemurian.]; [USGS Mesozoic Iocs. 3111, 12396, and 21237 on east side of Puale Bay about 8,400 feet northwest of Cape Kekurnoi, Alaska Peninsula. Coroniceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Orig. No. 48AI112) Lower Jurassic (?). Same geographical position as 21235. Float on northeast shore of Paule (Sic) Bay, 1.63 miles N22°W of cape at entrance to bay. Light-gray sandstone, probably from beds exposed in place here. About 700 ftg. above the base of the Lower Jurassic according to Kellum's Section.]
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Arnioceras cf. A. densicosta (Quenstedt)
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ROC 1282 N and S
, Karluk
, About 3000 feet S. 12 deg. E. of VABM 119 Bay and 10 feet above ROC 1283A. (N = bed north of fault, S = bed south of fault). (from Imlay E&R report of 5/26/71) [Imlay, 1981, USGS Prof. Paper 1148, p. 28 gives the following locality description: W.T. Rothwell and associates, 1962. Same general location as Mesozoic loc. 19804. At point about 3,000 feet S. 12 deg. E. of VABM 119 Bay (N=bed north of fault, S=bed south of fault). In massive sandstone about 290 ft (88 m) below the base of Kialagvik Formation. Unnamed beds. Late early to early late Sinemurian.]
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Arnioceras cf. A. densicosta (Quenstedt)
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ROC 1283
, Karluk
, About 3300 feet S. 10 deg. E. of VABM 119 Bay. (from Imlay E&R report of 5/26/71). [Imlay, 1981, USGS Prof. Paper 1148, p. 28 provides following locality description: W.T. Rothwell and associates, 1962. Same description as locality ROC 1282 but 10 ft (3 m) lower in the massive sandstone. Unnamed beds. Late early to early late Sinemurian.]
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Arnioceras cf. A. densicosta (Quenstedt)
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ROC 1241
, Karluk
, About 4300 feet S. 12 deg. E. of VABM 119 Bay. Float from 50 feet stratigraphically above ROC 1236 and 10 feet above ROC 1241. (from Imlay E&R report of 5/26/71) [Imlay, 1981, USGS Prof. Paper 1148, p. 28 provides the following locality description: W.T. Rothwell and associates, 1962. Northeast shore of Puale Bay. About 4,300 ft (1,311 m) S. 12 deg. E. of VABM 119 Bay, Karluk (C4-C5) quadrangle, Alaska Peninsula. About 700 ft (213 m) below base of Kialagvik Formation. Unnamed beds. Early Sinemurian.]
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Paracaloceras rursicostatum Frebold
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W.R. Smith, 1924, F18
(Mesozoic loc. 12396)
, Karluk
, [W.R. Smith, 1924. From northeast shore of Puale Bay reportedly about 2 miles (3.2 km) northwest of Chignik Point, Karluk (C-4 and C-5) quadrangle, Alaska Peninsula. Apparently obtained from different units as shown by presence of Paracaloceras as at USGS Mesozoic loc. 10820 and of Waehneroceras as at Mesozoic locality 3110. Uunamed beds. Early Sinemurian and late Hettangian. (description from Imlay, 1981, p. 28)]; USGS Mesozoic Iocs. 3111, 12396, and 21237 on east side of Puale Bay about 8,400 feet northwest of Cape Kekurnoi, Alaska Peninsula. Coroniceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: L. Jurassic. No. F-18. N. shore of Cold Bay, 2 mi. W. of Cape Kekurnoi, Cold Bay District, Alaska Peninsula, Alaska. Coll: Walter R. Smith, July 12, 1924.]
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Paracaloceras rursicostatum Frebold
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W.R. Smith, 1923, 1
(Mesozoic loc. 12075)
, Karluk
, Southwest shore of Alinchak Bay. W.R. Smith, 1923. (description from Martin, 1926, p. 186) [W.R. Smith, 1923. Southwest shore Alinchak Bay, Karluk (D-4) quadrangle, Alaska Peninsula. Probably same place as locality ROC 3002 and USGS Mesozoic loc. 29268. Unnamed beds. Early and middle Hettangian. (description from Imlay, 1981, p. 27)]
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Psiloceras? cf. P. planorbis (J. de C. Sowerby)
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Waehneroceras cf. W. tenerum (Neumayr)
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Waehneroceras cf. W. portlocki (Wright)
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ALp701M
(Mesozoic loc. M1738)
, Karluk
, British Petroleum, Inc. From or near the same place as Mesozoic locs. 3110 and 19803, 3 1/2 miles (5.6 km) west of Cape Kekurnoi, lat. 57 deg. 43.4' N., long 155 deg. 23.5' W., east shore of Puale Bay, Alaska Peninsula. Unnamed beds. Early to middle Hettangian. (description from Imlay, 1981, p. 28)
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Psiloceras? cf. P. planorbis (J. de C. Sowerby)
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Discamphiceras cf. D. toxophorum (Gumbel)
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ROC 1185
, Karluk
, Float from 4900 feet N. 30 deg. W. of VABM 96 Hike. This is from or near the same place as Mesozoic locs. 3110, 19803 and 25694. Loc. 19803 is 5400 feet N. 18 deg. W. of the most eastly point of Puale Bay and 360 feet below base of massive tuff and agglomerate (from Imlay E&R report of 5/26/71) [Imlay, 1981, p. 28, gives the following locality description: W.T. Rothwell and associates, 1962. From 1,900 ft (1,494 m) N. 30 deg. W. of VABM 96 Hike on northeast shore of Puale Bay, Alaska Peninsula. Float from or near same place as localities 3110 and 19803. Unnamed beds. Early to late Hettangian.]
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Psiloceras? cf. P. planorbis (J. de C. Sowerby)
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Waehneroceras cf. W. tenerum (Neumayr)
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ROC 3002
, Karluk
, About 2.1 miles N. 35 deg. E. of VABM 1197 Kek at south end of Alinchak Bay. Probably same place as Mes. locs. 12075 (W.R. Smith, 1923) and 29268 (G.W. Moore, 1965). (from Imlay E&R report of 5/26/71) [Imlay, 1981, USGS Prof. Paper 1148, p. 28 provides the following locality description: W.T. Rothwell and associates, 1962. South end of Alinchak Bay about 2.1 mi (3.3 km) N. 35 deg. E. of VABM 1197 Kek. Karluk (D-4) quadrangle, Alaska Peninsula. Unnamed beds. Early and middle Hettangian.]
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Psiloceras? cf. P. planorbis (J. de C. Sowerby)
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Discamphiceras cf. D. toxophorum (Gumbel)
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Laqueoceras cf. L. sublaqueus (Waehner)
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Waehneroceras cf. W. tenerum (Neumayr)
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Waehneroceras cf. W. portlocki (Wright)
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950 of Stanton, Martin, et al., 1904
(Mesozoic loc. 3110)
, Karluk
, N.E. shore of Cold Bay 1 mi. NW. of Cape and 200 to 300 ft. above 949. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 186 shows that the original collection was separated into two separate localities [3110 containing Ammonites (two or three other genera of Jurassic aspect) and 3110a contain Terebratula], the locality which is given as follows: "3110. Northeast shore of Cold Bay a short distance northwest of 3109, and 200 to 300 feet higher. T.W. Stanton, 1904." and "3110a. Same locality as 3110. Boulder on beach. T.W. Stanton, 1904."] [Imlay, 1981, p. 27 gives the following description: "T.W. Stanton, 1904. Northeast shore of Puale Bay about 1 mile (1.6 km) northwest of Chignik Point and 5,400 ft (1,646 m) N. 18 deg. W. of most easterly point of Puale Bay, Karluk (C4-C5) quadrangle. Alaska Peninsula. Unnamed beds. Hettangian."][Northeast shore of Cold Bay a short distance northwest of 3109, and 200 or 300 feet higher. T.W. Stanton, 1904. (description from Martin, 1926, p. 186)]; [USGS Mesozoic Iocs. 3110, 12394, 19803, 25694 and 29268 on peninsula between Puale Bay and Alinchak Bay about 1 mile N. 65° W. of Cape Kekurnoi, Alaska Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Jura? Or Trias? 950. East shore Cold Bay, about 1 mile N.W. Cape on east side of entrance to bay, 200 to 300 feet above loc. 949, Shelikof Straits. Colls. T.W. Stanton and R.W. Stone, Aug. 22, 1904.]
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Discamphiceras cf. D. toxophorum (Gumbel)
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Waehneroceras cf. W. tenerum (Neumayr)
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Waehneroceras cf. W. portlocki (Wright)
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55AKe6
(Mesozoic loc. 25694)
, Karluk
, [A.S. Keller, 1955, Southwest side of Alinchak Bay in limestone overlying Triassic beds. Probably from the same place as 12075, 12394, and 25694. Unnamed beds. Middle Hettangian (description from Imlay, 1981, p. 28)]; [USGS Mesozoic Iocs. 3110, 12394, 19803, 25694 and 29268 on peninsula between Puale Bay and Alinchak Bay about 1 mile N. 65° W. of Cape Kekurnoi, Alaska Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Upper Triassic. Orig. no. 44AKm F75. SW Alaska, Kanatak District, Paule [sic} Bay area. One mile northwest of Chinik Point. Northeast shore of Paule Bay and 5400 ft N18°W of the most easterly point of Paule Bay. About 360 ft below top of the Triassic. Fossiliferous, dense limestone interbedded with interbedded calcareous shale. Beds above more massive in calcareous sand. Collected by Swinney and Davisess, Aug. 25, 1944.]
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Discamphiceras cf. D. toxophorum (Gumbel)
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Waehneroceras cf. W. tenerum (Neumayr)
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Waehneroceras cf. W. portlocki (Wright)
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949 of Stanton, Martin, et al., 1904
(Mesozoic loc. 3109)
, Karluk
, Cold Bay NE shore nearly a mile W. of entrance to Bay. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 186 states: "Northeast shore of Cold Bay about a mile northwest of Cape Kekurnoi. T.W. Stanton, 1904."] [Imlay E&R report of 5/26/71 states: "About one mile northwest of Cape Kekurnoi (probably should be Chignik Point) and 200 or 300 feet stratigraphically lower than loc. 3110. This occurrence is 200 to 300 feet above the Triassic Monotis-bearing beds at Mes. loc. 19806 (= F78 of Kellum).] [Imlay, 1981, USGS Prof. Paper 1148, p. 27, gives the following locality description: "T.W. Stanton, 1904. Northeast shore of Puale Bay, about 1 mile (1.6 km) northwest of Chignik Point, Alaska Peninsula. A short distance southwest of locality 3110 and midway between that locality and Triassic Mesozoic loc. 19806 that contains Monotis. Unnamed beds. Hettangian."]
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Waehneroceras cf. W. tenerum (Neumayr)
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44AKm F75
(Mesozoic loc. 19803)
, Karluk
, [L.B. Kellum, S.N. Daviess, and C.M. Swinney, 1944. Northeast shore of Puale Bay 1 mile (1.6 km) northwest of Chignik Point, Alaska Peninsula. From dense limestone interbedded with limy shale, and some tuffaceous sandstone 360 ft (110 m) below base of massive tuff and agglomerate. Uunamed beds. Middle Hettangian. (description from Imlay, 1981, p. 28)]; [USGS Mesozoic Iocs. 3110, 12394, 19803, 25694 and 29268 on peninsula between Puale Bay and Alinchak Bay about 1 mile N. 65° W. of Cape Kekurnoi, Alaska Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Upper Triassic. Orig. no. 44AKm F75. SW Alaska, Kanatak District, Paule [sic} Bay area. One mile northwest of Chinik Point. Northeast shore of Paule Bay and 5400 ft N18°W of the most easterly point of Paule Bay. About 360 ft below top of the Triassic. Fossiliferous, dense limestone interbedded with interbedded calcareous shale. Beds above more massive in calcareous sand. Collected by Swinney and Davisess, Aug. 25, 1944.]
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Waehneroceras cf. W. tenerum (Neumayr)
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W.R. Smith, 1924, F16
(Mesozoic loc. 12394)
, Karluk
, W.R. Smith, 1924. Southwest side of Alinchak Bay at same place as Mesozoic loc. 12075. Unnamed beds, middle Hettangian. (description from Imlay, 1981, p. 27); [USGS Mesozoic Iocs. 3110, 12394, 19803, 25694 and 29268 on peninsula between Puale Bay and Alinchak Bay about 1 mile N. 65° W. of Cape Kekurnoi, Alaska Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: L. Jurassic: No. F-16. S. side of Alinchak Bay, Cold Bay District, Alaska Peninsula, Alaska. Coll: Walter R. Smith, July 0, 1924]
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Waehneroceras cf. W. tenerum (Neumayr)
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Waehneroceras cf. W. portlocki (Wright)
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65AMe55
(Mesozoic loc. 29268)
, Karluk
, G.W. Moore, 1965. Southwest shore of Alinchak Bay, lat 57 deg. 45.8' N., long 155 deg. 18.9' W., Karluk (D-4) quadrangle, Alaska Peninsula. Unnamed beds. Middle Hettangian. (description from Imlay, 1981, p. 28)
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Waehneroceras cf. W. tenerum (Neumayr)
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Waehneroceras cf. W. portlocki (Wright)
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65AP175
(Mesozoic loc. 29267)
, Karluk
, Marvin Mangus, 1965. Northeast shore of Puale Bay about 1 mile (1.6 km) northwest of Chignik Point, Alaska Peninsula. Probably from same place as Mesozoic locs. 3110 and 19803. Unnamed beds. Middle Hettangian (description from Imlay, 1981, p. 28)
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Waehneroceras cf. W. portlocki (Wright)
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907b of Stanton, Martin, et al., 1904
(Mesozoic loc. 2981)
, Seldovia
, Same locality as 907a but 200 ft. higher. [Note by RBB: Martin, 1926, USGS Bull. 776, p. 136 states: "Same locality as 2980, but 200 feet higher. T.W. Stanton, 1904."] [Imlay, 1981, p. 27, gives following description: "T.W. Stanton and G.C. Martin, 1904. Sea cliffs 2 miles (3.2 km west of Seldovia Bay, eastern part of sec. 34, T. 8 S., R. 15 W., Seldovia (B-5) quadrangle, on Kenai Peninsula, southern Alaska. Talkeetna Formation about 200 ft (61 m) above horizontal conglomerate. Earliest Sinemurian."]; [USGS Mesozoic loc. 2981. Two miles west of Pt. Naskowhak on west side of Seldovia Bay. Seldovia B-5 quad., Kenai Peninsula. Coroniceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Lower Jurassic. 907b. 2 miles west of Seldovia Bay, shore of Cook Inlet, 200 feet above 907a. Colls. T.W. Stanton and L. Martin, June 3, 1904.]
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Paracaloceras rursicostatum Frebold
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75JK77B
(Mesozoic loc. 31128)
, Seldovia
, J.S. Kelley, 1976. Cliff near head of small bay southwest of Point Naskowhak in NE1/4NW1/4 sec. 36, T. 15 S., R. 14 W., Seldovia (B-5) quadrangle, Kenai Peninsula, southern Alaska. Early Sinemurian (description from Imlay, 1981, p. 27).
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Corononiceras (Paracoroniceras) sp.
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48AI119
(Mesozoic loc. 21242)
, Seldovia
, [R.W. Imlay and D.J. Miller, 1948. Sea cliffs 2.95 miles (4.7 km) S 67 deg. W. of Point Naskowhak on south shore of Kachemak Bay, probably NE. cor. sec. 5, T. 9 S., R. 15 W., Seldovia (B-5) quadrangle, on Kenai Peninsula, southern Alaska. Talkeetna Formation in gray limestone and green tuffaceous sandstone. Early Hettangian. (description from Imlay, 1981, p. 27)]; [USGS Mesozoic Iocs. 21242 and 22664. From 2.8 to 2.95 miles S. 67° W. of Pt. Naskowhak on south shore of Kachemak Bay, Seldovia B-5 quadrangle, Kenai Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)]; [USGS Mes. Cat.: Orig. No. 48AI119. Lower Jurassic. Same general geographic location as 21238. South shore of Kachemak Bay. Gray limestone & green tuffaceous sandstone, about 100 ft. stratigraphically above lot 21241 (orig. no. 48AI118), exposed in sea cliff and ---- (looks like "veer") 2.95 miles S67°W of Pt. Naskowhak. Probably same locality as U.S.G.S. Mes. loc. Nos. 2982, & 7236. Sept. 6, 1948.]
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Franziceras cf. F. ruidum (Buckman)
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51AGz21
(Mesozoic loc. 22664)
, Seldovia
, South shore of Kachemak Bay, 2.8 miles west of Pt. Naskowhak (near 48 AI 118 and Mes. loc. 7237) (description from Imlay E&R report of Dec. 20, 1951; shipment AF-51-40) [Arthur Grantz, 1951. Sea cliffs 2.8 miles (4.5 km) west of Point Naskowhak on south shore of Kachemak Bay, near point on west side of sec. 34, T. 8 S., R. 16 W., Seldovia (B-5) quadrangle, Kenai Peninsula, southern Alaska. Talkeetna Formation. Early Hettangian. (description from Imlay, 1981, p. 27)]; [USGS Mesozoic Iocs. 21242 and 22664. From 2.8 to 2.95 miles S. 67° W. of Pt. Naskowhak on south shore of Kachemak Bay, Seldovia B-5 quadrangle, Kenai Peninsula. Waehneroceras. (description from Imlay and Detterman, 1973, p. 22)];
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Franziceras cf. F. ruidum (Buckman)
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