Section 2 (Chowan River Fm) - Lee Creek Mine (Pliocene of the United States)

Also known as B 25359

Where: North Carolina (35.3° N, 76.6° W: paleocoordinates 35.3° N, 76.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Chowan RIver Formation, Late/Upper Pliocene (3.6 - 2.6 Ma)

• Exposure of about 3 m of Chowan River Fm near base of section, immediately overlying unconformably the Yorktown Fm, and overlain by James City Fm. Basinal/Regional section name:Lee Creek Mine

• bed-level stratigraphic resolution

Environment/lithology: transition zone or lower shoreface; poorly lithified, burrowed, coarse-grained, shelly/skeletal sandstone

• Shallow shelf at a water depth of approximately 15 m, most of the beds being at a depth of 20 m or slightly greater.
• Olive gray coarse sand, bedded, burrowed, mottled, partly indurated with differential leaching. Fine shell in unleached portions.

Size class: macrofossils

Preservation: cast, original aragonite

Reposited in the USNM

• Collections reposited in USGS and USNM

Primary reference: L. W. Ward and B.W. Blackwelder. 1987. Late Pliocene and Early Pleistocene Mollusca from the James City and Chowan River Formations at Lee Creek Mine. Smithsonian Contributions to Paleobiology 61:113-283 [A. Miller/A. Hendy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 58893: authorized by Austin Hendy, entered by Austin Hendy on 28.02.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Mollusca and with good nomenclature.
Gastropoda
 Cerithioidea - Turritellidae
 Sorbeoconcha - Naticidae
"Lunatia heros" = Euspira heros
"Lunatia heros" = Euspira heros Say 1822 moon snail
 Neogastropoda - Olividae
Olivella mutica Say 1822 olive snail
 Sorbeoconcha - Tornidae
 Heterostropha - Pyramidellidae
 Trochoidea - Areneidae
"Arene pergemma" = Marevalvata tricarinata
"Arene pergemma" = Marevalvata tricarinata Stearns 1872 snail
 Lepetellida - Fissurellidae
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 - Crassatellidae
Crassinella dupliniana clam
[entered as Crassinella dupliana]
Crassinella lunulata Conrad 1834 clam
 Carditida - Astartidae
Astarte concentrica Conrad 1834 clam
 Carditida - Carditidae
Pleuromeris auroraensis Ward and Blackwelder 1987 clam
Pleuromeris decemcostata Conrad 1867 clam
Pteromeris perplana Dall 1903 clam
[entered as Pteromeris perlana]
 Thraciida - Thraciidae
Thracia brioni Ward and Blackwelder 1987 clam
 Cardiida - Sportellidae
"Anisodonta carolina" = Basterotia carolina
"Anisodonta carolina" = Basterotia carolina Dall 1900 clam
 Cardiida - Ungulinidae
Diplodonta acclinis Conrad 1832 clam
 Cardiida - Veneridae
Gouldia metastriata venus clam
[entered as Gouldia metastriatum]
Transennella stimpsoni Dall 1902 venus clam
 Cardiida - Tellinidae
"Tellina agilis" = Angulus agilis
"Tellina agilis" = Angulus agilis Stimpson 1857 tellin clam
 Cardiida - Semelidae
Abra aequalis Say 1822 abra
Semele bellastriata Conrad 1837 clam
 Pholadida - Myidae
Paramya subovata Conrad 1845 softshell clam
 Pholadida - Corbulidae
 Solenida - Pharidae
Ensis directus Conrad 1844 clam
 Mytilida - Crenellidae
Crenella decussata Montagu 1808 clam
 Mytilida - Mytilidae
"Modiolus cf. modiolus" = Modiolus (Modiolus) modiolus
"Modiolus cf. modiolus" = Modiolus (Modiolus) modiolus Linnaeus 1758 mussel
 Ostreida - Ostreidae
Conradostrea lawrencei Ward and Blackwelder 1987 oyster
 Pectinida - Plicatulidae
"Plicatula marginata" = Plicatula gibbosa
"Plicatula marginata" = Plicatula gibbosa Lamarck 1801 scallop
 Pectinida - Pectinoidae
Leptopecten auroraensis Ward and Blackwelder 1987 scallop
 Arcida - Arcidae
Anadara aequicostata Conrad 1845 ark
 Arcida - Glycymerididae
Glycymeris sloani Ward and Blackwelder 1987 clam
Glycymeris americana Defrance 1826 clam