Report on Referred Fossils |
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Stratigraphic range: |
Late middle or early late Miocene |
Kinds of fossils: |
Mollusks, echinoids, barnacle, plants |
Quadrangle or area: |
Chignik A-6, C-2, Port Moller D-1 quads., Alaska |
Shipment No.: |
A-80-7M |
Referred by: |
Detterman, Robert L.
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Report prepared by: |
Marincovich, Louie , Jr.
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Date: |
03/18/1980 |
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This report deals with six collections of megafossils from the Bear Lake Formation on the Alaska Peninsula, southwestern Alaska, and it relates to Branch of Alaskan Geology AMRAP project 9310-01381. This report complements one I did on Bear Lake mollusks from R.L. Detterman on 12/20/78. Collections below made by Louie Marincovich.
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User Note module to be added |
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78AM8
(Cenozoic loc. M7327)
, Port Moller
, Type section of Bear Lake Formation, on southwest side of ridge about 2 miles east of Bear Lake, section 4, T. 49 S., R. 70 W., Port Moller (D-1) quadrangle; lat. 56 deg., 58 min. N., long. 160 deg., 07 min., W. This locality is the same as M1186 (upper horizon) given in Burk (1965, Geol. Soc. America Memoir 99). Locality M7327 is about 250 feet below top of stratigraphic section.
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Spisula (Mactromeris) cf. S. (M.) albaria (Conrad, 1848)
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Siliqua cf. S. oregonia Dall, 1909
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Hiatella arctica (Linnaeus, 1767)
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Macoma (Macoma) optiva Yokoyama, 1923
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Macoma (Macoma) aff. M. (M.) astori Dall, 1909
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Macoma incongrua (von Martens, 1865)
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Tellina (Peronidia) protovenulosa Nomura, 1935
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Chione (Securella) ensifera (Dall, 1909)
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Chione (Securella) cf. C. (S.) ensifera (Dall, 1909)
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Acila (Truncacila) empirensis Howe, 1922
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Clinocardium cf. C. brooksi (Clark, 1932)
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or Clinocardium ciliatum (Fabricius)
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Felaniella parilis (Conrad, 1848)
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Nuculana cf. N. pernula (Mueller, 1779)
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?Mytilus (Plicatomytilus) gratacapi Allison and Addicott, 1976
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Polinices (Euspira) pallidus (Broderip and Sowerby, 1829)
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Natica (Cryptonatica) clausa Broderip and Sowerby, 1829
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Natica (Tectonatica) janthostoma Deshayes, 1839
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Margarites (Pupillaria) sp.
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Neptunea (Neptunea) lyrata altispira Gabb, 1869
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Crepidula cf. C. rostralis Dall, 1909
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Crepidula princeps Conrad, 1856
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carbonized plant fragments
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78AM9
(Cenozoic loc. M7328)
, Port Moller
, Type section of Bear Lake Formation, same stratigraphic section as M7327, above, but about 150 feet stratigraphically lower. This locality is the same as M1186 (lower horizon) in Burk (1965, Geol. Soc. America Memoir 99).
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Mya (?Arenomya) elegans Eichwald, 1871
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?Tellina (Peronidia) protovenulosa Nomura, 1935
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Clinocardium nuttalli (Conrad, 1838)
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Felaniella parilis (Conrad, 1848)
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Macoma (Macoma) aff. M. (M.) astori Dall, 1909
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Buccinum aff. B. castaneum Dall, 1877
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Colus aff. C. spitzbergensis (Reeve, 1855)
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carbonized plant fragments
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78AM10
(Cenozoic loc. M7329)
, Chignik
, Outcrop of Bear Lake Formation on first big ridge south of Sandy Lake. Fossils were collected at base of exposed stratigraphic section.
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Chione (Securella) cf. C. (S.) ensifera (Dall, 1909)
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Chlamys (Swiftopecten) cosibensis (Yokoyama, 1911)
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Cyclocardia cf. C. crassidens (Broderip and Sowerby, 1829)
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Tellina (Peronidia) protovenulosa Nomura, 1935
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Mya (Mya) truncata Linnaeus, 1758
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Neptunea (Neptunea) lyrata altispira Gabb, 1869
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78AM11
(Cenozoic loc. M7330)
, Chignik
, Same outcrop of Bear Lake Formation as locality M7329, above, but 50 to 100 feet stratigraphically higher in section.
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Mya (Mya) truncata Linnaeus, 1758
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78AM13
(Cenozoic loc. M7332)
, Chignik
, Outcrop of Bear Lake Formation along east side of Yellow Bluff Creek. Top and base of formation not exposed, locality is approximately at top of a prominent pale reddish brown 50 to 75-feet-thick sandstone bed and about 50 feet stratigraphically below a sandstone-conglomerate bed that holds up sharp ridges and forms very angular ridge-top spires, about half way between mountain tops and valley floor.
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?Felaniella parilis (Conrad, 1848)
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Fortipecten mollerensis MacNeil, 1967
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Acila (Truncacila) cf. A. (T.) empirensis Howe, 1922
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?Hiatella arctica (Linnaeus, 1767)
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Glycymeris cf. G. grewingki Dall, 1909
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Mya (?Arenomya) elegans Eichwald, 1871
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78AM14
(Cenozoic loc. M7333)
, Chignik
, Same stratigraphic section as M7332, above, but about 15 m. stratigraphically higher in section.
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Fortipecten mollerensis MacNeil, 1967
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Siliqua cf. S. oregonia Dall, 1909
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Chione (Securella) cf. C. (S.) ensifera (Dall, 1909)
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Mya (?Arenomya) elegans Eichwald, 1871
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Mya (Mya) truncata Linnaeus, 1758
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?Beringius hertleini MacNeil, 1970
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