M 740 (Eocene of the United States)

Where: Prince Georges County, Maryland (38.8° N, 76.7° W: paleocoordinates 39.1° N, 60.8° 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 99289: authorized by Jocelyn Sessa, entered by Ursula Smith on 04.11.2010

Creative Commons license: CC BY (attribution)

Taxonomic list

Scaphopoda
 Dentaliida - Dentaliidae
Dentalium "sp. B" Linnaeus 1758 tusk shell
Bivalvia
 Nuculida - Nucularcidae
 Carditida - Carditidae
Venericardia (Venericor) potapacoensis Clark and Martin 1901 clam
Gastropoda
 Sorbeoconcha - Naticidae
Euspira marylandica Conrad 1865 moon snail