Rock Landing - Yorktown Formation (Pliocene to of the United States)

Where: Craven County, North Carolina (35.5° N, 77.6° W: paleocoordinates 35.6° N, 76.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Yorktown Formation, Early/Lower Pliocene to Early/Lower Pliocene (5.3 - 2.6 Ma)

• Local section name: Rock Landing. Basinal/regional section name: Craven.

•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.

• formation-level stratigraphic resolution

Environment/lithology: coastal; unlithified, shelly/skeletal, gray sandstone

• No geologic or paleoenvironmental data reported in text.
• Gray sand containing many entire and broken shells.

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 59330: 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
 Lepetellida - Fissurellidae
 Sorbeoconcha - Caecidae
"Caecum regulare" = Caecum (Caecum) regulare Carpenter 1858 snail
 Neogastropoda - Columbellidae
"Anachis (Costoanachis) avara" = Costoanachis avara, "Mitrella lunata" = Astyris lunata
"Anachis (Costoanachis) avara" = Costoanachis avara Say 1822 snail
Subspecies: A. (C.) avara similis
"Mitrella lunata" = Astyris lunata Say 1826 snail
 Neogastropoda - Nassariidae
Ilyanassa granifera Conrad 1868 snail
 Neogastropoda - Muricidae
Eupleura caudata Say 1822 murex snail
Subspecies: Eupleura caudata sulcidentata
 Sorbeoconcha - Cypraeidae
"Cypraea (Cypraeorbis) carolinensis" = Akleistostoma carolinensis
"Cypraea (Cypraeorbis) carolinensis" = Akleistostoma carolinensis Conrad 1841 cowry
 Vanikoroidea - Eulimidae
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
 Arcida - Glycymerididae
 Cardiida - Cardiidae
 Cardiida - Semelidae
Abra aequalis Say 1822 abra
 Cardiida - Donacidae
Donax emmonsi clam
Subspecies: D. emmonsi preaequilibrata
 Cardiida - Tellinidae
"Tellina (Moerella) dupliniana" = Moerella dupliniana
"Tellina (Moerella) dupliniana" = Moerella dupliniana Dall 1900 tellin clam
 Cardiida - Chamidae
 Cardiida - Veneridae
"Chione (Chione) grus" = Timoclea grus, "Chione (Chione) cribraria" = Chione cribraria, "Venus (Mercenaria) campechiensis" = Mercenaria campechiensis, Gemma cravenensis, Gemma magna
"Chione (Chione) grus" = Timoclea grus Holmes 1858 venus clam
"Chione (Chione) cribraria" = Chione cribraria Conrad 1843 venus clam
"Venus (Mercenaria) campechiensis" = Mercenaria campechiensis Gmelin 1791 quahog
Subspecies V. (M.) campechiensis rileyi
Gemma cravenensis Gardner 1943 venus clam
Gemma magna Dall 1903 venus clam
Subspecies: Gemma magna virginiana and majorina
 Cardiida - Mactridae
"Spisula (Hemimactra) modicella" = Hemimactra, Mulinia congesta
"Spisula (Hemimactra) modicella" = Hemimactra clam
Subspecies: S. (H.) modicella alta
Mulinia congesta Conrad 1833 clam
Subspecies: Mulinia congesta magnoliana
 Cardiida - Kelliidae
Bornia triangula Glenn 1904 clam
 Pholadida - Corbulidae
"Corbula (Caryocorbula) conradi" = Caryocorbula conradi
"Corbula (Caryocorbula) conradi" = Caryocorbula conradi Gardner 1944 clam
 Lucinida - Lucinidae
"Phacoides (Parvilucina) multilineatus" = Parvilucina multistriata
"Phacoides (Parvilucina) multilineatus" = Parvilucina multistriata Conrad 1841 clam
 Carditida - Crassatellidae
Crassinella lunulata Conrad 1834 clam
 Carditida - Carditidae
"Cardita arata" = Carditamera arata, "Glans (Pteromeris) perplana" = Pteromeris perplana, "Glans (Pleuromeris) tridentata" = Pleuromeris tridentata
"Cardita arata" = Carditamera arata Conrad 1832 clam
Subspecies: Carditamera arata verdevilla
"Glans (Pteromeris) perplana" = Pteromeris perplana Dall 1903 clam
"Glans (Pleuromeris) tridentata" = Pleuromeris tridentata Say 1826 clam
 Carditida - Astartidae
"Astarte (Ashtarotha) concentrica" = Astarte concentrica, Astarte (Ashtarotha) undulata
"Astarte (Ashtarotha) concentrica" = Astarte concentrica Conrad 1834 clam