M 125 (Paleocene of the United States)

Where: Anne Arundel County, Maryland (38.9° N, 76.6° W: paleocoordinates 39.4° N, 58.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Aquia Formation (Pamunkey Group), Late/Upper Paleocene (58.7 - 55.8 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 91721: authorized by Jocelyn Sessa, entered by Laurie Eccles on 18.10.2009, edited by Ursula Smith

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Nuculanida - Nuculanidae
Nuculana parilis pointed nut clam
 Cardiida - Ungulinidae
 Cardiida - Veneridae
Dosiniopsis lenticularis Rogers 1838 venus clam
 Carditida - Crassatellidae
Bathytormus alaeformis Conrad 1830 clam
 Carditida - Astartidae
"Astarte" marylandica Clark 1895 clam
 Arcida - Glycymerididae
Glycymeris (Glycymeris) idonea Conrad 1865 clam
Glycymeris (Glycymeris) idonea subsp. A
 Arcida - Cucullaeidae
Gastropoda
 Sorbeoconcha - Rostellariidae
Calyptraphorus jacksoni Clark 1895 snail
 Cerithioidea - Turritellidae
? Turritella "sp. B" Lamarck 1799 turret shell