Warsaw - Duplin Formation (Pliocene of the United States)

Where: Duplin County, North Carolina (35.0° N, 78.1° W: paleocoordinates 35.1° N, 77.4° W)

• coordinate based on nearby landmark

• outcrop-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 59308: authorized by Austin Hendy, entered by Austin Hendy on 25.03.2006

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
 Sorbeoconcha - Cypraeidae
"Cypraea (Cypraeorbis) carolinensis" = Akleistostoma carolinensis
"Cypraea (Cypraeorbis) carolinensis" = Akleistostoma carolinensis Conrad 1841 cowry
Bivalvia
 Pectinida - Pectinoidae
"Chlamys (Aequipecten) eborea" = Carolinapecten eboreus
"Chlamys (Aequipecten) eborea" = Carolinapecten eboreus Conrad 1833 scallop
 Pectinida - Plicatulidae
"Plicatula marginata" = Plicatula gibbosa
"Plicatula marginata" = Plicatula gibbosa Lamarck 1801 scallop
 Ostreida - Gryphaeidae
"Chama striata" = Nanogyra (Palaeogyra) virgula Deshayes 1831 oyster
 Cardiida - Mactridae
Mulinia congesta Conrad 1833 clam