PRI 2251 (Eocene of the United States)

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

Show authors, comments, and common names
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium "sp. A"
Dentalium "sp. A" Linnaeus 1758 tusk shell
Bivalvia
 Cardiida - Veneridae
Pitar (Pitar) ovatus, Macrocallista subimpressa
Pitar (Pitar) ovatus Rogers and Rogers 1837 venus clam
 Cardiida - Tellinidae
Tellina (Angulus) virginiana, Tellina williamsi
Tellina (Angulus) virginiana Clark 1895 tellin clam
Tellina williamsi Clark 1895 tellin clam
 Cardiida - Cardiidae
Nemocardium lene
 Pholadida - Corbulidae
Corbula "sp. G"
Corbula "sp. G" Bruguière 1789 clam
 Lucinida - Lucinidae
Lucina "sp. D", Lucina dartoni, ""Lucina" uhleri" = Myrtaea (Myrtaea) curta
Lucina "sp. D" Bruguière 1797 clam
Lucina dartoni Clark 1895 clam
""Lucina" uhleri" = Myrtaea (Myrtaea) curta Conrad 1865 clam
 Mytilida - Mytilidae
Brachidontes potomacensis
 Arcida - Glycymerididae
Glycymeris (Glycymeris) idonea
Glycymeris (Glycymeris) idonea Conrad 1865 clam
Glycymeris (Glycymeris) idonea subsp. A
 Arcida - Cucullaeidae
"Cucullaea transversa" = Cucullaea
"Cucullaea transversa" = Cucullaea clam
 Pectinida - Anomiidae
Anomia marylandica
 Pectinida - Pectinoidae
Chlamys choctavensis
Chlamys choctavensis Aldrich 1895 scallop
 Ostreida - Pteriidae
Pteria "sp. D"
Pteria "sp. D" Scopoli 1777 pearl oyster
 Nuculida - Nuculidae
Nucula (Nucula) potomacensis
 Nuculanida - Yoldiidae
Yoldia (Calorhadia) potomacensis
 Nuculanida - Nuculanidae
Nuculana cultelliformis, Nuculana improcera, Nuculana tysoni, Saccella parva
Nuculana cultelliformis pointed nut clam
Nuculana improcera pointed nut clam
Nuculana tysoni pointed nut clam
Saccella parva Rogers and Rogers 1837 pointed nut clam
Gastropoda
 Heterostropha - Mathildidae
Gegania marylandica
 Sorbeoconcha - Rostellariidae
Calyptraphorus "sp. D"
Calyptraphorus "sp. D" Conrad 1857 snail
 Neogastropoda - Borsoniidae
cf. Pseudotoma bellistriata
 Neogastropoda - Buccinidae
cf. Bolis "sp. A", Strepsidura "sp. C"
cf. Bolis "sp. A" Gardner 1939 true whelk
Strepsidura "sp. C" Swainson 1840 true whelk
 Neogastropoda - Melongenidae
cf. Levifusus "sp.", Levifusus "sp. A"
cf. Levifusus "sp." Conrad 1865 snail
Levifusus "sp. A" Conrad 1865 snail
 Neogastropoda - Mitridae
? Mesorhytis "sp. A"
 Neogastropoda - Olividae
""Olivula" "sp."" = Ancilla (Olivula)
""Olivula" "sp."" = Ancilla (Olivula) olive snail
 Sorbeoconcha - Ficidae
"Ficopsis "sp."" = Ficus
"Ficopsis "sp."" = Ficus Röding 1798 fig shell
 Cerithioidea - Turritellidae
? Turritella "sp. A"
? Turritella "sp. A" Lamarck 1799 turret shell