Where: Charles County, Maryland (38.4° 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 91117: authorized by Jocelyn Sessa, entered by Laurie Eccles on 05.09.2009, edited by Ursula Smith
Creative Commons license: CC BY (attribution)
Taxonomic list
Scaphopoda | |
Dentalium "sp. A" Linnaeus 1758 tusk shell | |
Gastropoda | |
Gegania marylandica snail | |
? Turritella "sp. A" Lamarck 1799 turret shell | |
"Ficopsis "sp."" = Ficus
"Ficopsis "sp."" = Ficus Röding 1798 fig shell | |
""Olivula" "sp."" = Ancilla (Olivula)
""Olivula" "sp."" = Ancilla (Olivula) olive snail | |
cf. Bolis "sp. A" Gardner 1939 true whelk
Strepsidura "sp. C" Swainson 1840 true whelk | |
cf. Levifusus "sp." Conrad 1865 snail
Levifusus "sp. A" Conrad 1865 snail | |
? Mesorhytis "sp. A" mitre shell | |
Calyptraphorus "sp. D" Conrad 1857 snail | |
Bivalvia | |
Saccella parva Rogers and Rogers 1837 pointed nut clam
Nuculana cultelliformis pointed nut clam
Nuculana improcera pointed nut clam
Nuculana tysoni pointed nut clam | |
Nucula (Nucula) potomacensis nut clam | |
""Lucina" uhleri" = Myrtaea (Myrtaea) curta Conrad 1865 clam
Lucina "sp. D" Bruguière 1797 clam
Lucina dartoni Clark 1895 clam | |
Nemocardium lene cockle | |
Tellina (Angulus) virginiana Clark 1895 tellin clam
Tellina williamsi Clark 1895 tellin clam | |
Macrocallista subimpressa venus clam
Pitar (Pitar) ovatus Rogers and Rogers 1837 venus clam | |
Corbula "sp. G" Bruguière 1789 clam | |
"Cucullaea transversa" = Cucullaea
"Cucullaea transversa" = Cucullaea clam | |
| |
Pteria "sp. D" Scopoli 1777 pearl oyster | |
Anomia marylandica jingle | |
Chlamys choctavensis Aldrich 1895 scallop | |
Brachidontes potomacensis mussel |