M 116 (Paleocene of the United States)

Where: Prince Georges County, Maryland (38.7° N, 77.0° W: paleocoordinates 39.3° N, 58.5° 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 91712: authorized by Jocelyn Sessa, entered by Laurie Eccles on 17.10.2009, edited by Ursula Smith

Creative Commons license: CC BY (attribution)

Taxonomic list

 Arcida - Cucullaeidae
 Pectinida - Pectinoidae
 Ostreida - Ostreidae
 Mytilida - Mytilidae
 Carditida - Crassatellidae
Bathytormus alaeformis Conrad 1830 clam
 Carditida - Carditidae
 Cardiida - Veneridae
Dosiniopsis lenticularis Rogers 1838 venus clam
 Cardiida - Tellinidae
Tellina (Angulus) virginiana Clark 1895 tellin clam
 Hiatellida - Hiatellidae
 Pholadomyida - Pholadomyidae
Pholadomya marylandica Conrad 1842 clam
 Ptenoglossa - Vasidae
cf. Tudicla "sp. B" Röding 1798 snail
 Calyptraeoidea - Calyptraeidae
Calyptraea (Trochita) aperta Solander 1766 slipper shell
 Sorbeoconcha - Turritellidae
"Turritella mortoni" = Kapalmerella mortoni
"Turritella mortoni" = Kapalmerella mortoni Conrad 1830 turret shell