Station 2249b [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: Probably 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, probably 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 78270: 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.
Lingulata
 Discinida - Disciniidae
Discinisca lugubris Conrad 1834
Scaphopoda
 Gadilida - Gadilidae
Cadulus thallus Conrad 1834 tusk shell
 Dentaliida - Dentaliidae
Dentalium attenuatum Say 1824 tusk shell
Bivalvia
 Pholadida - Corbulidae
Corbula inaequalis Say 1824 clam
 Cardiida - Mactridae
"Spisula" sp. Gray 1837 clam
Leptomactra delumbis Conrad 1832 clam
Mulinia congesta Conrad 1833 clam
 Cardiida - Veneridae
Mercenaria sp. Schumacher 1817 quahog
 Cardiida - Ungulinidae
Diplodonta acclinis Conrad 1832 clam
 Cardiida - Chamidae
Chama congregata Conrad 1833 jewel box
 Cardiida - Cardiidae
Chesacardium acutilaqueatum Conrad 1839 cockle
 Cardiida - Tellinidae
"Tellina declivis" = Moerella declivis Conrad 1834 tellin clam
 Cardiida - Semelidae
Cumingia tellinoides Conrad 1831 clam
 Pandorida - Pandoridae
"Pandora arenosa" = Pandora (Pandorella) arenosa
"Pandora arenosa" = Pandora (Pandorella) arenosa Conrad 1834 clam
 Carditida - Astartidae
Astarte concentrica Conrad 1834 clam
 Carditida - Carditidae
Cyclocardia granulata Say 1824 clam
 Carditida - Crassatellidae
 Pectinida - Pectinoidae
 Pectinida - Plicatulidae
"Plicatula marginata" = Plicatula gibbosa
"Plicatula marginata" = Plicatula gibbosa Lamarck 1801 scallop
 Ostreida - Ostreidae
Conradostrea sculpturata Conrad 1840 oyster
 Arcida - Noetiidae
Noetia incile Say 1824 clam
Gastropoda
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
Calliostoma philanthropus Conrad 1834 top snail
 Lepetellida - Fissurellidae
Diodora redimicula Say 1824 snail
 Opisthobranchia - Cylichnidae
Acteocina candei d'Orbigny 1841 barrel-bubble
 Neogastropoda - Nassariidae
Ilyanassa granifera Conrad 1868 snail
 Neogastropoda - Muricidae
Ecphora quadricostata Conrad 1830 murex snail
 Sorbeoconcha - Naticidae
"Polinices duplicata" = Neverita duplicatus
"Polinices duplicata" = Neverita duplicatus Say 1822 moon snail
 Cerithioidea - Turritellidae
"Turritella cf. alticostata" = Turritella (Turritella) alticostata
"Turritella cf. alticostata" = Turritella (Turritella) alticostata Conrad 1834 turret shell
 Neotaenioglossa - Calyptraeidae
Crepidula plana Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
 Epitonioidea - Epitoniidae
Epitonium sp. Bolten 1798 wentletrap