Sample# 17f [Great Bridge Mbr, Acredale Fm] (Pleistocene of the United States)

Where: Virginia (36.8° N, 76.2° W: paleocoordinates 36.8° N, 76.2° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Great Bridge Member (Acredale Formation), Late/Upper Pleistocene (0.1 - 0.0 Ma)

• Collection from the base of section, from 0.64 m thick clay. Great Bridge Member of Acredale Fm. Late Pleistocene in age, presumably from stage 5 (70-125,000 ybp).

• bed-level stratigraphic resolution

Environment/lithology: marginal marine; unlithified, shelly/skeletal, brown, gray, green, silty, sandy claystone and unlithified, shelly/skeletal, brown, gray, green, argillaceous, silty sandstone

• "estuarine" in stratigraphic column
• Silty sandy clay and clayey to silty sand, fine, dark gray-brown to green-brown; locally fossiliferous

Size class: macrofossils

Reposited in the UNSM

Collection methods: bulk,

• Collected by authors. Collections reside in the USNM

Primary reference: R. S. Spencer and L.D. Campbell. 1987. The fauna and paleoecology of the Late Pleistocene marine sediments of southeastern Virginia. Bulletins of American Paleontology 92(327):1-124 [A. Miller/A. Hendy/A. Hendy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 57704: authorized by Austin Hendy, entered by Austin Hendy on 19.12.2005

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive and authoritative. Includes Foraminifera, Porifera, Coelenterata, Bryozoa, Annelida, in addition to Mollusca.
 Rotaliacea - Elphidiidae
 Nonionacea - Nonionidae
 Arcida - Arcidae
"Anadara ovalis" = Lunarca ovalis
"Anadara ovalis" = Lunarca ovalis Bruguiere 1789 ark
 Ostreida - Ostreidae
Crassostrea virginica Gmelin 1791 oyster
 Pholadida - Corbulidae
"Corbula contracta" = Caryocorbula contracta, "Corbula swiftiana" = Caryocorbula caribaea
"Corbula contracta" = Caryocorbula contracta Say 1822 clam
"Corbula swiftiana" = Caryocorbula caribaea d'Orbigny 1845 clam
 Pholadida - Myidae
Paramya subovata Conrad 1845 softshell clam
"Mya arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
 Cardiida - Kelliidae
 Cardiida - Anatinellidae
Raeta plicatella Lamarck 1818 clam
 Cardiida - Mactridae
Mulinia lateralis Say 1822 clam
Rangia cuneata Sowerby 1831 clam
 Cardiida - Solecurtidae
Tagelus plebeius Lightfoot 1786 clam
 Cardiida - Tellinidae
Macoma constricta Bruguière 1792 tellin clam
Macoma balthica Linnaeus 1758 tellin clam
 Cardiida - Semelidae
Abra aequalis Say 1822 abra
 Nuculida - Nuculidae
"Nucula proxima" = Nucula (Nucula) proxima
"Nucula proxima" = Nucula (Nucula) proxima Say 1820 Atlantic Nut Clam
 Protobranchia - Nuculanidae
Nuculana acuta Conrad 1832 pointed nut clam
 Ptenoglossa - Epitoniidae
Epitonium multistriatum Say 1826 wentletrap
"Epitonium rupicolum" = Epitonium rupicola Kurtz 1860 wentletrap
Epitonium angulatum Say 1831 wentletrap
 Cephalaspidea - Cylichnidae
Acteocina canaliculata Say 1826 barrel-bubble
 Triphoroidea - Cerithiopsidae
"Cerithiopsis greeni" = Cerithiopsis greenii
"Cerithiopsis greeni" = Cerithiopsis greenii Adams 1839 snail
 Neogastropoda - Columbellidae
"Anachis obesa" = Parvanachis obesa
"Anachis obesa" = Parvanachis obesa Adams 1845 snail
 Neogastropoda - Buccinidae
"Cantharus cancellarius" = Solenosteira cancellaria
"Cantharus cancellarius" = Solenosteira cancellaria Conrad 1846 true whelk
 Neogastropoda - Muricidae
Eupleura caudata Say 1822 murex snail
 Littorinoidea - Littorinidae
"Littorina irrorata" = Littoraria irrorata
"Littorina irrorata" = Littoraria irrorata Say 1822 periwinkle
 Calyptraeoidea - Calyptraeidae
Crepidula plana Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell
 Cheilostomata - Microporellidae
 Cheilostomata - Schizoporellidae
 Cheilostomata - Electridae
 Cheilostomata - Electrinidae
 Miliolida - Miliolidae