M 113 (Paleocene of the United States)

Where: Prince Georges County, Maryland (38.8° N, 76.7° W: paleocoordinates 39.3° N, 58.2° 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 91709: authorized by Jocelyn Sessa, entered by Laurie Eccles on 17.10.2009, edited by Ursula Smith

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
 Arcida - Glycymerididae
Glycymeris (Glycymeris) idonea Conrad 1865 clam
Glycymeris (Glycymeris) idonea subsp. A
 Arcida - Cucullaeidae
 Pectinida - Pectinoidae
 Ostreida - Gryphaeidae
Gryphaeostrea vomer Morton 1828 oyster
 Ostreida - Pteriidae
Pteria "sp. D" Scopoli 1777 pearl oyster
 Mytilida - Mytilidae
 Carditida - Astartidae
"Astarte" marylandica Clark 1895 clam
 Carditida - Crassatellidae
Bathytormus alaeformis Conrad 1830 clam
 Carditida - Carditidae
 Pholadida - Teredinidae
Teredo virginiana Clark 1895 clam
 Cardiida - Gastrochaenidae
Gastrochaena "sp. A" Spengler 1783 clam
 Cardiida - Ungulinidae
 Cardiida - Veneridae
Dosiniopsis lenticularis Rogers 1838 venus clam
 Cardiida - Cardiidae
Nemocardium "sp. C" Meek 1876 cockle
 Hiatellida - Hiatellidae
 Lucinida - Lucinidae
""Lucina" uhleri" = Myrtaea (Myrtaea) curta Conrad 1865 clam
 Protobranchia - Nuculanidae
Nuculana parilis pointed nut clam
Gastropoda
 Neogastropoda - Buccinidae
Strepsidura "spp." Swainson 1840 true whelk
Pseudoliva "sp. C" Swainson 1840 true whelk
 Stromboidea - Rostellariidae
Calyptraphorus jacksoni Clark 1895 snail
 Ficoidea - Ficidae
 Naticoidea - Naticidae
Euspira marylandica Conrad 1865 moon snail
 Vermetoidea - Vermetidae
Serpulorbis "sp." Sasso 1827 worm shell
 Sorbeoconcha - Turritellidae
? Turritella "sp. B" Lamarck 1799 turret shell
Turritella humerosa Conrad 1835 turret shell
 Heterostropha - Acteonidae
Tornatellaea "sp. C" Conrad 1860 snail
 Pyramidelloidea - Pyramidellidae
Odostomia "sp. C" Fleming 1817 snail
 Fissurelloidea - Fissurellidae
 Trochoidea - Trochidae
"Calliostoma" "sp. B" Swainson 1840 top snail