Clinton - Duplin Formation (Pliocene of the United States)

Where: Sampson County, North Carolina (35.0° N, 78.3° W: paleocoordinates 35.1° N, 77.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• No lithostratigraphic details or stratigraphic relationships provided in text. From Siple (1957) "The Duplin in South Carolina is considered to be equivalent to the upper Yorktown of Virginia and the Cancellaria biofacies within the Choctawhatchee stage of Florida." AGE: Late Pliocene. Campbell (1974) suggested an age of zone N-20, or about 3.0-3.5 Ma for the type section of the Duplin Fm at Natural Well, late Pliocene age.

• formation-level stratigraphic resolution

Environment/lithology: coastal; unlithified, medium-grained, coarse, shelly/skeletal, gray, blue, calcareous sandstone

• No geologic or paleoenvironmental data reported in text.
• Shelly, medium- to coarse-grained sand, sandy marl, and limestone, bluish gray.

Size class: macrofossils

Reposited in the USNM

• Collections reposited in USNM and USGS collections.

Primary reference: J. A. Gardner. 1943. Mollusca from the Miocene and Lower Pliocene of Virginia and North Carolina. Part 1. Pelecypoda. United States Geological Survey Professional Paper 199(A):1-178 [A. Miller/A. Hendy/S. Ávila]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 59327: authorized by Austin Hendy, entered by Austin Hendy on 26.03.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• Exhaustive for Gastropoda, Bivalvia and Scaphopoda. Nomenclature is somewhat antiquated but provided to species resolution and authoritative.
Gastropoda
 Neogastropoda - Nassariidae
Ilyanassa granifera Conrad 1868 snail
 Sorbeoconcha - Cypraeidae
"Cypraea (Cypraeorbis) carolinensis" = Akleistostoma carolinensis
"Cypraea (Cypraeorbis) carolinensis" = Akleistostoma carolinensis Conrad 1841 cowry
Bivalvia
 Arcida - Arcidae
"Anadara carolinensis" = Barbatia carolinensis, "Anadara lienosa" = Anadara (Rasia) lienosa
"Anadara carolinensis" = Barbatia carolinensis Conrad 1849 clam
"Anadara lienosa" = Anadara (Rasia) lienosa Say 1832 ark
 Pectinida - Plicatulidae
"Plicatula marginata" = Plicatula gibbosa
"Plicatula marginata" = Plicatula gibbosa Lamarck 1801 scallop
 Pectinida - Pectinoidae
"Chlamys (Aequipecten) eborea" = Carolinapecten eboreus
"Chlamys (Aequipecten) eborea" = Carolinapecten eboreus Conrad 1833 scallop
 Ostreida - Gryphaeidae
"Chama striata" = Nanogyra (Palaeogyra) virgula Deshayes 1831 oyster
 Lucinida - Lucinidae
"Phacoides (Lucinisca) cribrarius" = Lucinisca cribrarius
"Phacoides (Lucinisca) cribrarius" = Lucinisca cribrarius Say 1824 clam
 Cardiida - Veneridae
"Macrocallista reposta" = Macrocallista (Macrocallista) reposta, "Venus (Mercenaria) campechiensis" = Mercenaria campechiensis
"Macrocallista reposta" = Macrocallista (Macrocallista) reposta Conrad 1834 venus clam
"Venus (Mercenaria) campechiensis" = Mercenaria campechiensis Gmelin 1791 quahog
Subspecies V. (M.) campechiensis rileyi
 Cardiida - Mactridae
Mulinia congesta Conrad 1833 clam
Also: Mulinia congesta magnoliana
 Cardiida - Tellinidae
Tellina sp., "Tellina (Moerella) dupliniana" = Moerella dupliniana
Tellina sp. Linnaeus 1758 tellin clam
"Tellina (Moerella) dupliniana" = Moerella dupliniana Dall 1900 tellin clam
 Cardiida - Semelidae
 Carditida - Astartidae
"Astarte (Ashtarotha) concentrica" = Astarte concentrica
"Astarte (Ashtarotha) concentrica" = Astarte concentrica Conrad 1834 clam
Also includes: A. (A.) concentrica conradi
 Carditida - Carditidae
"Glans (Pleuromeris) tridentata" = Pleuromeris tridentata, "Glans (Pteromeris) perplana" = Pteromeris perplana
"Glans (Pleuromeris) tridentata" = Pleuromeris tridentata Say 1826 clam
Subspecies: G. (P.) tridentata decemcostata
"Glans (Pteromeris) perplana" = Pteromeris perplana Dall 1903 clam
 Carditida - Crassatellidae
Crassinella lunulata Conrad 1834 clam
 Nuculida - Nuculidae
"Nucula proxima" = Nucula (Nucula) proxima
"Nucula proxima" = Nucula (Nucula) proxima Say 1820 Atlantic Nut Clam