Station 2247c [Moore House Mbr, Yorktown Fm] (Pliocene of the United States)

Where: York County, Virginia (37.2° N, 76.5° W: paleocoordinates 37.3° N, 75.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Moore House Member (Yorktown Formation), Late/Upper Pliocene (3.6 - 2.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Moore House Mbr of the Yorktown Fm, which unconformably overlies regionally the Morgarts Beach and Rushmere Mbrs of the Yorkown Fm, and is unconformably overlain regionally by the Chowan River Fm. AGE: Late Pliocene according to Ward (1993). STRATIGRAPHIC POSITION: From unknown position within the Moore House Mbr.

• bed-level stratigraphic resolution

Environment/lithology: coastal; siliciclastic sediments

• ENVIRONMENT: Not stated in text, but appears to be relatively shallow shelf depths.
• SPECIFIC LITHOLOGY: Unknown, but presumably siliciclastic. LITHIFICATION: Unknown.

Size class: macrofossils

Collected by Harris in 1890; reposited in the UNSM

Collection methods: surface (in situ),

• COLLECTOR: G.D. Harris, 1890. REPOSITORY: USNM.

Primary reference: L. W. Ward. 1993. The G.D Harris 1890 manuscript on the stratigraphy of Miocene and Pliocene beds at Yorktown, Virginia. Paleontological Research Institute Special Publication 20:1-118 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 78267: authorized by Austin Hendy, entered by Austin Hendy on 31.01.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not exhaustive (as commented by Ward 1993, p. 3), but includes fairly comprehensive lists of characteristic gastropods and bivalves. NOMENCLATURE: Lists compiled by R. Arnold, based on identifications by Harris, with nomenclature subsequently revised by Ward to a modern standard, with species-resolution assignments.
Gastropoda
 Cerithioidea - Turritellidae
"Turritella cf. alticostata" = Turritella (Turritella) alticostata
"Turritella cf. alticostata" = Turritella (Turritella) alticostata Conrad 1834 turret shell
 Cerithioidea - Planaxidae
 Neotaenioglossa - Calyptraeidae
Crepidula fornicata Linnaeus 1758 slipper shell
"Crepidula spinosa" = Bostrycapulus aculeatus Gmelin 1791 slipper shell
 Neogastropoda - Nassariidae
Ilyanassa granifera Conrad 1868 snail
 Neogastropoda - Drilliidae
"Drillia" sp. Gray 1838 snail
Bivalvia
 Nuculida - Nuculidae
"Nucula proxima" = Nucula (Nucula) proxima
"Nucula proxima" = Nucula (Nucula) proxima Say 1820 Atlantic Nut Clam
 Pectinida - Pectinoidae
Chesapecten madisonius Say 1824 scallop
 Pectinida - Plicatulidae
"Plicatula marginata" = Plicatula gibbosa
"Plicatula marginata" = Plicatula gibbosa Lamarck 1801 scallop
 Ostreida - Ostreidae
Conradostrea sculpturata Conrad 1840 oyster
Ostrea raveneliana Tuomey and Holmes 1855 oyster
 Arcida - Noetiidae
Noetia incile Say 1824 clam
 Arcida - Glycymerididae
Glycymeris americana Defrance 1826 clam
 Cardiida - Tellinidae
Tellina sp., "Tellina declivis" = Moerella declivis
Tellina sp. Linnaeus 1758 tellin clam
"Tellina declivis" = Moerella declivis Conrad 1834 tellin clam
 Cardiida - Veneridae
Mercenaria sp. Schumacher 1817 quahog
Gemma magna Dall 1903 venus clam
SUBSPECIES: G. magna virginiana
 Cardiida - Mactridae
Mulinia congesta Conrad 1833 clam
 Hiatellida - Hiatellidae
Panopea sp. Menard 1807 clam
 Pholadomyida - Margaritariidae
Margaritaria abrupta Conrad 1832 clam
 Lucinida - Lucinidae
"Parvilucina crenulatus" = Parvilucina crenulata
"Parvilucina crenulatus" = Parvilucina crenulata Conrad 1840 clam
 Carditida - Crassatellidae
 Carditida - Condylocardiidae
Erycinella ovalis Conrad 1845 clam
 Carditida - Carditidae
Cyclocardia granulata Say 1824 clam
 Carditida - Astartidae
Astarte concentrica Conrad 1834 clam