M 485 (Eocene of the United States)

Where: Charles County, Maryland (38.5° N, 77.0° W: paleocoordinates 38.8° N, 61.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Nanjemoy Formation (Pamunkey Group), Ypresian (56.0 - 47.8 Ma)

• formation-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: mesofossils

Primary reference: K. V. Palmer and D. C. Brann. 1965. Catalogue of the Paleocene and Eocene mollusca of the southern and eastern United States. Part 1. Pelecypoda, Amphineura, Peteropoda, Scaphopoda and Cephalopoda. Bulletins of American Paleontology 48:1-471 [M. Kosnik/M. Kosnik/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 99267: authorized by Jocelyn Sessa, entered by Ursula Smith on 04.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Scaphopoda
 Gadilida - Gadilidae
Cadulus bellulus Clark 1895 tusk shell
Bivalvia
 Cardiida - Veneridae
Pitar (Pitar) ovatus Rogers and Rogers 1837 venus clam
 Carditida - Carditidae
Venericardia (Venericor) potapacoensis Clark and Martin 1901 clam
 Nuculida - Nuculidae
 Nuculanida - Nuculanidae
Nuculana improcera pointed nut clam
Gastropoda
 Sorbeoconcha - Cypraeidae
Cypraea "sp. A" Linnaeus 1758 cowry
 Opisthobranchia - Cylichnidae
Cylichna venusta Clark 1895 snail