USGS 29510, Biggs lower (Cretaceous of the United States)

Also known as Biggs farm locality on the Chesapeake and Delaware canal, about 300 yd west of light 13 and 1.3 miles (airline) due east of St. Georges Bridge.

Where: New Castle County, Delaware (39.6° N, 75.7° W: paleocoordinates 39.0° N, 45.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Mount Laurel Sand Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

Environment/lithology: marine

Reposited in the USGS

• Collected by Buddenhagen, Kauffman, and Sohl 1966

Primary reference: J. P. Owens, J. P. Minard, N. F. Sohl and F. James Mello. 1970. Stratigraphy of the outcropping post-Magothy Upper Cretaceous formations in Southern New Jersey an Northern Delmarva peninsula, Delaware and Maryland. USGS Professional Paper 674:1-60 [M. Kosnik/M. Kosnik/M. Kosnik]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 6174: authorized by Matt Kosnik, entered by Matt Kosnik on 01.02.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Cephalopoda
 Nautilida - Nautilidae
Eutrephoceras dekayi Morton 1834 nautiloid
Eutrephoceras dekayi (Morton)
 Belemnitida - Belemnitellidae
Belemnitella americana belemnite
Belemnitella americana (Morton)
Gastropoda
 Basommatophora - Siphonariidae
? Anisomyon jessupi pulmonate
Anisomyon? jessupi Richards and Shapiro
 Architaenioglossa - Ampullinidae
"Pseudamaura lirata" = Ampullina (Pseudamaura)
"Pseudamaura lirata" = Ampullina (Pseudamaura) snail
Pseudomaura lirata (Wade)
 Neogastropoda - Muricidae
Sargana sp. Stephenson 1923 murex snail
Sargana sp.
 Sorbeoconcha - Aporrhaidae
Arrhoges sp. Gabb 1868 snail
Arrhoges sp.
 Heterostropha - Architectonicidae
Margaritella sp. Meek and Hayden 1860 snail
Margaritella sp.
Bivalvia
 Nuculanida - Malletiidae
Malletia longifrons clam
Nuculana longifrons (Conrad)
Malletia stephensoni clam
Perissonata stephensoni (Richards)
 Pholadida - Corbulidae
Caestocorbula crassiplica Gabb 1860 clam
Caesticorbula crassiplica (Gabb)
 Cardiida - Gastrochaenidae
Eufistulana sp. Eames 1951 clam
Kummelia sp. - owens
 Carditida - Carditidae
aff. Vetericardiella subcircula clam
Vetericardia aff. V. subcircula Wade
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
Trigonia sp.
 Pectinida - Neitheoidae
Neithea quinquecostata Sowerby 1814 scallop
Neithea quinquecostata Sowerby
 Pectinida - Pectinoidae
"? Microchlamys (Pecten) venustus" = Dhondtichlamys
"? Microchlamys (Pecten) venustus" = Dhondtichlamys scallop
Pecten (Pecten?) venustus Morton
 Pectinida - Anomiidae
Anomia tellinoides jingle
Anomia tellinoides Morton
 Ostreida - Ostreidae
Acutostrea plumosa oyster
Ostrea plumosa Morton
 Ostreida - Flemingostreidae
Agerostrea falcata Morton 1827 oyster
Lopha falcata Morton
 Ostreida - Gryphaeidae
Pycnodonte mutabilis oyster
Pyncnodonte mutabilis Morton
Exogyra cancellata oyster
Exogyra cancellata Stephenson
 Arcida - Glycymerididae
Postligata crenata clam
Postiligata crenata Wade
Rhynchonellata
 Terebratulida - Cancellothyrididae
Terebratulina cooperi
Terebratulina cooperi Richards and Shapiro
Anthozoa
 Scleractinia - Micrabaciidae
"Micrabacia hilgardi" = Micrabacia marylandica
"Micrabacia hilgardi" = Micrabacia marylandica Stephenson 1916 stony coral
Micrabacia hilgardi Stephenson