Castoria - Yorktown Formation: Early/Lower Pliocene - Late/Upper Pliocene, North Carolina

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
Gastropoda - Lepetellida - Fissurellidae
Diodora redimicula (Say 1824)
Gardner 1948
Subspecies: D. redimicula virgilina
Bivalvia - Pholadida - Corbulidae
Corbula (Caryocorbula) conradi Gardner 1944
recombined as Caryocorbula conradi
Bivalvia - Cardiida - Veneridae
Gemma magna Dall 1903
Subspecies: Gemma magna majorina
Callocardia (Agriopoma) castoriana Gardner 1943
Venus (Mercenaria) campechiensis (Gmelin 1791)
recombined as Mercenaria campechiensis
Subspecies V. (M.) campechiensis rileyi
Bivalvia - Carditida - Crassatellidae
Crassinella lunulata (Conrad 1834)
Bivalvia - Carditida - Astartidae
Astarte berryi
Astarte (Ashtarotha) undulata (Say 1824)
Bivalvia - Pectinida - Pectinidae
Chlamys (Aequipecten) eborea (Conrad 1833)
recombined as Carolinapecten eboreus
Bivalvia - Pectinida - Plicatulidae
Plicatula marginata Say 1824
synonym of Plicatula gibbosa
Bivalvia - Arcida - Glycymerididae
Glycymeris duplinensis
see common names

Geography
Country:United States State/province:North Carolina County:Greene
Coordinates: 35.5° North, 77.7° West (view map)
Paleocoordinates:35.6° North, 76.8° West
Basis of coordinate:based on nearby landmark
Geographic resolution:local area
Time
Period:Neogene Epoch:Pliocene
10 m.y. bin:Cenozoic 6
Key time interval:Early/Lower Pliocene - Late/Upper Pliocene
Age range of interval:5.33300 - 2.58000 m.y. ago
Stratigraphy
Formation:Yorktown
Stratigraphic resolution:formation
Stratigraphy comments: Local section name: Castoria. Basinal/regional section name: Greene.
No specific lithostratigraphic details or stratigraphic relationships provided in text beyond the following: The beds assigned to the Yorktown are grouped for convenience into units lettered A to F, A being the lowest and F being the highest. Collections from Greene county appear to derive from Unit E. Unit E presumably falls within zone 2 of the Yorktown Fm (Gardner 1943). How this equates to the lithostratigraphic members applied in Ward (1992) is unclear. While older literature assigns the Yorktown Formation to the Late Miocene, a late Early Pliocene-Late Pliocene age is assigned to the collection following Ward (1992). Furthemore as the collection is derived from the upper zone of the formation a Late Pliocene age is assigned.
Lithology and environment
Primary lithology:shelly/skeletal,gray unlithified sandstone
Includes fossils?Y
Lithology description: Gray sand containing many entire and broken shells.
Environment:coastal indet.
Geology comments: No geologic or paleoenvironmental data reported in text.
Taphonomy
Modes of preservation:body
Size of fossils:macrofossils
Collection methods and comments
Collection methods:field collection,survey of museum collection
Reason for describing collection:taxonomic analysis
Museum repositories:USNM
Collection method comments: Collections reposited in USNM and USGS collections.
Taxonomic list comments:Exhaustive for Gastropoda, Bivalvia and Scaphopoda. Nomenclature is somewhat antiquated but provided to species resolution and authoritative.
Metadata
Database number:59328
Authorizer:A. Hendy Enterer:A. Hendy
Modifier:L. Eccles Research group:GCP,marine invertebrate
Created:2006-03-26 11:14:56 Last modified:2013-11-25 13:37:23
Access level:the public Released:2006-03-26 11:14:56
Creative Commons license:CC BY
Reference information

Primary reference:
16984. 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]

Secondary references:

17048 J. A. Gardner. 1948. Mollusca from the Miocene and Lower Pliocene of Virginia and North Carolina: Part 2. Scaphopoda and Gastropoda. United States Geological Survey Professional Paper 199(B):179-310 [A. Miller/A. Hendy]