Where: Calvert County, Maryland (38.7° N, 76.5° W: paleocoordinates 38.9° N, 73.2° W)
• coordinate stated in text
• outcrop-level geographic resolution
When: Plum Point Member (Calvert Formation), Langhian (16.0 - 13.8 Ma)
• Zone 10, Kellogg 1923
• bed-level stratigraphic resolution
Environment/lithology: marine; sandy claystone
Size class: macrofossils
Preservation: original phosphate
Reposited in the USNM
Collection methods: surface (float),
• collected from a block of sediment apparently fallen from the cliff from Zone 10
Primary reference: R. Kellogg. 1923. Description of two squalodonts recently discovered in the Calvert Cliffs, Maryland; and notes on the shark-toothed cetaceans. Proceedings of the U. S. National Museum 62(16):1-69 [M. Uhen/M. Uhen/M. Uhen]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 55517: authorized by Mark Uhen, entered by Mark Uhen on 28.10.2005, edited by Austin Hendy
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
"Rhabdosteus longirostris" = Eurhinodelphis longirostris5
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Squalodon sp. Grateloup 1840 toothed whale | |
Chondrichthyes | |
"Sphyrna prisca" = Cestracion prisca5
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"Carcharodon megalodon" = Otodus megalodon5
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Gastropoda | |
"Turritella plebeia" = Mariacolpus plebeia6, Turritella indentata4, Turritella indenta6, Turritella exaltata6
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Bivalvia | |
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Lucinoma contracta6, Stewartia foremani6, "Phacoides anodonta" = Stewartia anodonta4, "Stewartia anodonta" = Stewartia anodonta6
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"Arca subrostrata" = Dallarca subrostrata4
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Pecten humphreysii6, Eburneopecten cerinus6, Chesapecten coccymeus6, "Pecten madisonius" = Chesapecten (Chesapecten) nefrens4
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