Where: Prince Georges County, Maryland (39.0° N, 76.8° W: paleocoordinates 39.5° N, 57.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Aquia Formation (Pamunkey Group), Thanetian (59.2 - 56.0 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 99283: authorized by Jocelyn Sessa, entered by Ursula Smith on 04.11.2010

Creative Commons license: CC BY (attribution)