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Reference
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| Title: |
Report on Referred Fossils
,
1955
(11/29)
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This completes the report on your fossils from the Naknek formation and the Late Cretaceous beds at or near the head of the Alaskan Peninsula. Many thanks for the locality descriptions. The ammonite in collection RPO-185 is not determinable but reminds me of Kheraiceras from the Chinitna formation. I doubt very much that it could be as old as Lower Jurassic as suggested by the label. The fossils from the Naknek formation includes species of Aucella that are common in the upper part of the formation, as discussed in my report of November 4. The pelecypods in collection RPO-134 are not determinable but do not resemble anything in the Naknek formation. The Inoceramus in collection RPO-6 is strongly digitate which is characteristic of species of the Santonian and Campanian stages. The Inocerami in collections RPO-146 and CEK-752 are not sufficiently well preserved for an age determination. [Note: These collections were referred by C.E. Kirschner through George Gates] |
| Report by: |
Ralph W. Imlay
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| Referred by: |
Charles E. Kirschner
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| | Age: | Jurassic-Cretaceous (Jurassic or Cretaceous) |
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| Comment: | The Inocerami in collections RPO-146 and CEK-752 are not sufficiently well preserved for an age determination. [Note by R.B. Blodgett, the presence of inoceramids here indicate either a Jurassic or Cretaceous age, though Imlay lists these collections under "Fossils from late Cretaceous beds."] |
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