USGS 29508, 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 6175: authorized by Matt Kosnik, entered by Matt Kosnik on 01.02.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Sedentaria
 Sabellida - Serpulidae
Serpula sp. Linnaeus 1758
Serpula sp.
Bivalvia
 Nuculanida - Malletiidae
Malletia longifrons clam
Nuculana longifrons (Conrad)
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
Trigonia sp.
 Trigoniida - Megatrigonioidae
"Scabrotrigonia eufaulensis" = Pterotrigonia (Scabrotrigonia)
"Scabrotrigonia eufaulensis" = Pterotrigonia (Scabrotrigonia) clam
Trigonia eufaulensis Gabb
 Poromyida - Poromyidae
Liopistha protexta Conrad 1853 clam
Liopistha protexia (Conrad)
 Cardiida - Arcticidae
Etea sp. Conrad 1873 clam
Etea sp.
 Cardiida - Veneridae
? Aphrodina eufaulensis venus clam
Aphrodina? eufaulensis (Conrad) of Wade
 Cardiida - Tellinidae
Tellina sp. Linnaeus 1758 tellin clam
Tellina sp.
 Cardiida - Cardiidae
aff. Granocardium (Granocardium) kummeli cockle
Cardium (Granocardium) aff. C. (G.) kummeli Weller
Cardium sp. Linnaeus 1758 cockle
Cardium spp.
aff. Pleuriocardia donohuensis cockle
Cardium aff. C. donohuensis Stephenson
 Lucinida - Lucinidae
Lucina sp. Bruguière 1797 clam
Lucina sp.
 Carditida - Carditidae
aff. Vetericardiella subcircula clam
Vetericardia aff. V. subcircula Wade
 Ostreida - Flemingostreidae
Agerostrea mesenterica Morton 1834 oyster
Lopha mesenterica Morton
Agerostrea falcata Morton 1827 oyster
Lopha falcata Morton
 Ostreida - Gryphaeidae
Pycnodonte mutabilis oyster
Pyncnodonte mutabilis Morton
Exogyra cancellata oyster
Exogyra cancellata Stephenson
 Pectinida - Anomiidae
Paranomia scabra scallop
Paranomia scabra Morton
Anomia tellinoides jingle
Anomia tellinoides Morton
 Pectinida - Limidae
Pseudolimea reticulata Forbes 1845 file clam
Lima reticulata Lyell and Forbes
 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
 Myalinida - Inoceramidae
Inoceramus sp. Sowerby 1814 clam
Inoceramus sp.
 Arcida - Glycymerididae
Postligata crenata clam
Postiligata crenata Wade
Postligata wordeni clam
Postiligata wordeni Gardner
 Arcida - Arcidae
cf. Arca macnairyensis ark
Arca cf. A. macnairyensis Gabb
Breviarca ? richardsi clam
Breviarca richardsi Harbison ?
 Arcida - Cucullaeidae
Cucullaea sp. Lamarck 1801 clam
Cucullaea sp.
 Mytilida - Mytilidae
Lithophaga sp. Röding 1798 mussel
Lithophaga sp.
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium intercalatum tusk shell
Dentalium intercalatum Wade
Gastropoda
 Opisthobranchiata - Cylichnidae
Cylichna sp. Lovén 1846 snail
Cylichna sp.
 Opisthobranchiata - Scaphandridae
Ellipsoscapha sp. Stephenson 1941 snail
Ellipsoscapha sp.
 Sorbeoconcha - Naticidae
Amaurellina stephensoni moon snail
Amaurellina stephensoni (Wade)
Gyrodes ? americanus moon snail
Gyrodes americanus Wade?
Euspira rectilabrum Conrad 1858 moon snail
Euspira rectilabrum Conrad
 Sorbeoconcha - Xenophoridae
"cf. Xenophora leprosa" = Xenophora (Endoptygma) leprosa
"cf. Xenophora leprosa" = Xenophora (Endoptygma) leprosa Morton 1834 carrier shell
Xenophora cf. X. leprosa Morton
 Cerithioidea - Turritellidae
"Haustator trilira" = Turritella trilira
"Haustator trilira" = Turritella trilira Conrad 1860 turret shell
Haustator trilira Conrad
 Heterostropha - Mathildidae
Mathilda sp. n. sp. Semper 1865 snail
Mathilda n. sp. (Owens et al)
Gegania sp. Jeffreys 1884 snail
Tuba sp.
 Heterostropha - Acteonidae
Acteon sp. Montfort 1810 snail
Acteon sp.
 Heterostropha - Architectonicidae
Margaritella sp. Meek and Hayden 1860 snail
Margaritella sp.
 Basommatophora - Siphonariidae
? Anisomyon jessupi pulmonate
Anisomyon? jessupi Richards and Shapiro
 Seguenzioidea - Eucyclidae
Calliomphalus (Calliomphalus) sp. Cossmann 1888 snail
Calliomphalus (Calliomphalus) sp.
Cephalopoda
 Ammonitida - Baculitidae
Baculites sp. Lamarck 1799 ammonite
Baculites sp.
 Belemnitida - Belemnitellidae
Belemnitella americana belemnite
Belemnitella americana (Morton)
Demospongiae
 Clavulina - Clionaidae
Cliona sp. demosponge
Clione sp.
Anthozoa
 Scleractinia - Micrabaciidae
"Micrabacia hilgardi" = Micrabacia marylandica
"Micrabacia hilgardi" = Micrabacia marylandica Stephenson 1916 stony coral
Micrabacia hilgardi Stephenson