Lewes, Sussex Co. - Cape May Fm (Pleistocene) (Pleistocene of the United States)

Also known as Delaware Loc. 1

Where: Sussex County, Delaware (38.8° N, 75.1° W: paleocoordinates 38.8° N, 74.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Pleistocene (2.6 - 0.0 Ma)

• LITHOSTRATIGRAPHY: From Cape May Formation (Richards 1962). AGE: Sangamon-Wisconsin (MacClintock and Richards 1936), Pleistocene (Richards 1962).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; unlithified siliciclastic sediments

• ENVIRONMENT: No specific environment provided in text for individual collection.
• SPECIFIC LITHOLOGY: No detailed lithologic data reported in text. Cape May Formation contains sands and clays, hence siliciclastic. LITHIFICATION: Assumed to be unlithified given age and figured specimens in Richards (1962).

Size class: macrofossils

Collection methods: COLLECTORS: Based on collections of Richards (1936). REPOSITORIES: Collections held in various museums, possibly including the Academy of Natural Sciences, USNM, MCZ (Cambridge), and AMNH.

Primary reference: H. G. Richards. 1962. Studies on the marine Pleistocene: Part II. The marine Pleistocene mollusks of eastern North America. Transactions of the American Philosophocal Society 52(3):1-142 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 66701: authorized by Austin Hendy, entered by Austin Hendy on 12.10.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Exhaustive for gastropoda and bivalvia. NOMENCLATURE: Not an authoratative publication, and somewhat antiquated. However, all occurrences include species-resolution assignments and list synonymies.
Bivalvia
 Arcida - Arcidae
"Anadara ovalis" = Lunarca ovalis
"Anadara ovalis" = Lunarca ovalis Bruguiere 1789 ark
 Pectinida - Anomiidae
Anomia simplex d'Orbigny 1845 jingle
 Ostreida - Ostreidae
Crassostrea virginica Gmelin 1791 oyster
 Mytilida - Mytilidae
"Modiolus demissus" = Geukensia demissa
"Modiolus demissus" = Geukensia demissa Dilwyn 1817 mussel
 Pholadida - Myidae
"Mya arenaria" = Mya (Arenomya) arenaria
"Mya arenaria" = Mya (Arenomya) arenaria Linnaeus 1758 softshell clam
 Cardiida - Veneridae
Mercenaria mercenaria Linnaeus 1758 quahog
 Cardiida - Solecurtidae
"Tagelus gibbus" = Tagelus plebeius
"Tagelus gibbus" = Tagelus plebeius Lightfoot 1786 clam
Gastropoda
 Neogastropoda - Nassariidae
"Nassarius obsoletus" = Ilyanassa obsoleta
"Nassarius obsoletus" = Ilyanassa obsoleta Say 1822 snail
 Neogastropoda - Melongenidae
Busycon perversum Linnaeus 1758 whelk
 Calyptraeoidea - Calyptraeidae
Crepidula plana Say 1822 slipper shell
Crepidula fornicata Linnaeus 1758 slipper shell