Station 2249a [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; shelly/skeletal siliciclastic sediments

• ENVIRONMENT: Not stated in text, but appears to be relatively shallow shelf depths.
• SPECIFIC LITHOLOGY: Very shelly bed. 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 78269: 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
Bivalvia
 Nuculanida - Nuculanidae
Nuculana acuta Conrad 1832 pointed nut clam
 Nuculida - Nuculidae
"Nucula proxima" = Nucula (Nucula) proxima
"Nucula proxima" = Nucula (Nucula) proxima Say 1820 Atlantic Nut Clam
 Carditida - Astartidae
Astarte concentrica Conrad 1834 clam
 Carditida - Carditidae
Cyclocardia granulata Say 1824 clam
 Carditida - Crassatellidae
Crassinella lunulata Conrad 1834 clam
 Pandorida - Pandoridae
"Pandora crassidens" = Pandora (Clidiophora) crassidens
"Pandora crassidens" = Pandora (Clidiophora) crassidens Conrad 1838 clam
 Pholadida - Myidae
Sphenia dubia Lea 1845 softshell clam
 Cardiida - Semelidae
Cumingia tellinoides Conrad 1831 clam
 Cardiida - Tellinidae
Tellina sp. Linnaeus 1758 tellin clam
 Cardiida - Ungulinidae
 Cardiida - Mactridae
Mulinia congesta Conrad 1833 clam
 Cardiida - Chamidae
Chama congregata Conrad 1833 jewel box
 Cardiida - Veneridae
Gemma magna Dall 1903 venus clam
SUBSPECIES: Gemma magna virginiana
 Cardiida - Lasaeidae
Aligena aequata Conrad 1843 aligena clam
 Lucinida - Lucinidae
"Parvilucina crenulatus" = Parvilucina crenulata
"Parvilucina crenulatus" = Parvilucina crenulata Conrad 1840 clam
 Ostreida - Ostreidae
Conradostrea sculpturata Conrad 1840 oyster
 Pectinida - Plicatulidae
"Plicatula marginata" = Plicatula gibbosa
"Plicatula marginata" = Plicatula gibbosa Lamarck 1801 scallop
 Arcida - Arcidae
 Arcida - Noetiidae
Noetia incile Say 1824 clam
 Arcida - Glycymerididae
Gastropoda
 Opisthobranchia - Cylichnidae
Acteocina candei d'Orbigny 1841 barrel-bubble
 Heterostropha - Architectonicidae
"Architectonica nuperum" = Architectonica (Pseudotorinia) nupera
"Architectonica nuperum" = Architectonica (Pseudotorinia) nupera Conrad 1834 snail
 Trochoidea - Trochidae
Calliostoma sp. Swainson 1840 top snail
 Vanikoroidea - Eulimidae
Strombiformis sp. da Costa 1778 snail
Eulima sp. Risso 1826 snail
 Neotaenioglossa - Calyptraeidae
Crepidula plana Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
"Crucibulum constrictum" = Crucibulum (Dispotaea) constrictum Conrad 1842 slipper shell
"Crepidula spinosa" = Bostrycapulus aculeatus Gmelin 1791 slipper shell
 Epitonioidea - Epitoniidae
Epitonium sp. Bolten 1798 wentletrap
 Neogastropoda - Olividae
Olivella sp. Swainson 1831 olive snail
 Neogastropoda - Muricidae
"Trophon tetricus" = Boreotrophon tetricus Conrad 1832 murex snail
 Neogastropoda - Marginellidae
"Marginella limatula" = Prunum limatulum Conrad 1834 margin shell
Marginella bella margin shell
Marginella sp. Lamarck 1799 margin shell
 Neogastropoda - Cystiscidae
Granulina ovuliformis d'Orbigny 1842 snail
 Neogastropoda - Nassariidae
Nassarius sp. Duméril 1806 snail
 Neogastropoda - Buccinidae
 Neogastropoda - Fasciolariidae
Fusinus exilis Dall 1890 snail
 Neogastropoda - Columbellidae
Mitrella sp. Risso 1826 snail
"Mitrella communis" = Astyris communis Conrad 1862 snail
 Neogastropoda - Melongenidae
 Neogastropoda - Drilliidae
"Drillia" eburnea Conrad 1862 snail
 Neogastropoda - Conidae
Conus marylandicus Green 1830 cone shell
 Neogastropoda - Terebridae
Terebra sp. Bruguière 1789 auger snail
 Sorbeoconcha - Vermetidae
 Sorbeoconcha - Vitrinellidae
Adeorbis sp. Wood 1848 snail
 Sorbeoconcha - Naticidae
"Lunatia heros" = Euspira heros
"Lunatia heros" = Euspira heros Say 1822 moon snail
 Sorbeoconcha - Cerithiopsidae
"Seila adamsi" = Seila adamsii
"Seila adamsi" = Seila adamsii Lea 1845 snail
 Cerithioidea - Planaxidae
Thecostraca
 Balanomorpha - Balanidae
Balanus sp. Da Costa 1778 barnacle