James River and SR-1506 (Pleistocene of the United States)

Where: Nansemond County, Virginia (36.9° N, 76.5° W: paleocoordinates 36.9° N, 76.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: silty-sand facies Member (Norfolk Formation), Pleistocene (2.6 - 0.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: estuary or bay; unlithified, pebbly, silty sandstone and siltstone

• composed of fairly uniform silty sand and sandy silt. sometimes thick and fills channels cut into underlying formation where it is coarse sand and pea-gravel overlain by organic sands, silts, and woody peats, which grade upward into fossiliferous silty sands.

Primary reference: N. K. Coch. 1971. Geology of the Newport News South and Bowers Hill quadrangles, Virginia. Virginia Division of Mineral Resources Report of Investigations 28:1-26 [J. Alroy/M. Sommers/M. Uhen]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 7108: authorized by John Alroy, entered by Mike Sommers on 25.04.2000, edited by Austin Hendy

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Bivalvia
 Mytilida - Mytilidae
"Brachidontes recurvus" = Ischadium recurvum
"Brachidontes recurvus" = Ischadium recurvum Rafinesque 1820 mussel
 Arcida - Arcidae
"Arca transversa" = Anadara (Larkinia) transversa
"Arca transversa" = Anadara (Larkinia) transversa Say 1822 ark
 Ostreida - Ostreidae
"Crassostrea virginica" = Crassostrea virginica
"Crassostrea virginica" = Crassostrea virginica Gmelin 1791 oyster
[entered as Crassotrea virginica]
 Solenida - Pharidae
Ensis directus Conrad 1844 clam
 Pholadida - Pholadidae
 Cardiida - Tellinidae
"Tellina agilis" = Angulus agilis
"Tellina agilis" = Angulus agilis Stimpson 1857 tellin clam
 Cardiida - Semelidae
Abra aequalis Say 1822 abra
 Cardiida - Veneridae
Mercenaria mercenaria Linnaeus 1758 quahog
Mercenaria campechiensis Gmelin 1791 quahog
 Cardiida - Mactridae
Mulinia lateralis Say 1822 clam
"Mactra solidissima" = Hemimactra solidissima Dilwyn 1817 clam
Rangia cuneata Sowerby 1831 clam
 Carditida - Carditidae
"Venericardia borealis" = Cyclocardia borealis
"Venericardia borealis" = Cyclocardia borealis Conrad 1831 clam
Gastropoda
 Neogastropoda - Melongenidae
Busycon caricum, "Busycon canaliculatum" = Busycotypus canaliculatus
"Busycon canaliculatum" = Busycotypus canaliculatus Linnaeus 1758 whelk
 Neogastropoda - Nassariidae
"Nassarius trivittatus" = Ilyanassa trivittata
"Nassarius trivittatus" = Ilyanassa trivittata Say 1822 snail
 Neogastropoda - Olividae
Olivella mutica Say 1822 olive snail
 Neogastropoda - Marginellidae
Prunum roscidum Redfield 1860 margin shell
 Neogastropoda - Muricidae
Eupleura caudata Say 1822 murex snail
 Sorbeoconcha - Naticidae
"Polinices duplicatus" = Neverita duplicatus
"Polinices duplicatus" = Neverita duplicatus Say 1822 moon snail