USGS 29511 (Cretaceous of the United States)

Also known as South side Chesapeake and Delaware canal, 0.8 mile west of Penn Central railroad bridge, 27ft above water level.

Where: Delaware (39.5° N, 75.7° W: paleocoordinates 39.0° N, 45.6° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Marshalltown Formation, Late/Upper Campanian (83.5 - 70.6 Ma)

Environment/lithology: marine

Reposited in the USGS

• Collected by N.F. Sohl and E.G. Kauffman 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 6155: authorized by Matt Kosnik, entered by Matt Kosnik on 30.01.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Demospongiae
 Clavulina - Clionaidae
Cliona sp.
Cliona sp. demosponge
Clione sp.
Gastropoda
 Cerithioidea - Turritellidae
Turritella sp.
Turritella sp. Lamarck 1799 turret shell
Turritella sp.
 Neogastropoda - Pyropsidae
Pyropsis sp.
Pyropsis sp. Conrad 1860 snail
Pyropsis sp.
 Neogastropoda - Volutidae
Longoconcha sp., Volutomorpha sp.
Longoconcha sp. Stephenson 1941 volute
Longoconcha sp.
Volutomorpha sp. Gabb 1877 volute
Volutomorpha sp.
 Neogastropoda - Buccinidae
Buccinopsis sp.
Buccinopsis sp. Conrad 1857 true whelk
Buccinopsis sp.
 Sorbeoconcha - Aporrhaidae
? Anchura sp.
? Anchura sp. Conrad 1860 snail
Anchura ? sp.
 Sorbeoconcha - Naticidae
Gyrodes abyssinus
Gyrodes abyssinus moon snail
Gyrodes abyssinus (Morton)
 Opisthobranchia - Bullidae
Bulla macrostromata
Bulla macrostromata snail
Bulla macrostromata (Gabb)
Bivalvia
 Trigoniida - Megatrigonioidae
"Scabrotrigonia thoracia" = Pterotrigonia (Scabrotrigonia)
"Scabrotrigonia thoracia" = Pterotrigonia (Scabrotrigonia) clam
Trigonia thoracia Morton of Weller
 Carditida - Crassatellidae
Crassatella sp.
Crassatella sp. Lamarck 1799 clam
Crassatella sp.
 Lucinida - Mactromyidae
cf. Unicardium umbonatum
cf. Unicardium umbonatum clam
Umbonicardium cf. U. umbonatum (Whitfield)
 Pholadida - Pholadidae
Martesia sp.
Martesia sp. Sowerby 1824 clam
Martesia sp.
 Pholadida - Corbulidae
Caestocorbula sp., Caestocorbula crassiplica
Caestocorbula sp. Vincent 1910 clam
Caesticorbula sp.
Caestocorbula crassiplica Gabb 1860 clam
Caesticorbula crassaplica (Gabb)
 Cardiida - Arcticidae
Veniella conradi, Etea sp.
Veniella conradi Morton 1833 clam
Veniella conradi Morton of Weller
Etea sp. Conrad 1873 clam
Etea sp.
 Cardiida - Veneridae
Cyprimeria excavata, Cyprimeria sp.
Cyprimeria excavata venus clam
Cyprimeria excavata (Morton)
Cyprimeria sp. Conrad 1864 venus clam
Cyprimeria sp. (large)
 Cardiida - Cardiidae
"Brevicardium parahillanum" = Nemocardium (Brevicardium), Granocardium (Granocardium) dumosum, Cardium sp.
"Brevicardium parahillanum" = Nemocardium (Brevicardium) cockle
Brevicardium parahillanum Wade
Granocardium (Granocardium) dumosum Conrad 1870 cockle
Cardium (Granocardium) dumosum Conrad
Cardium sp. Linnaeus 1758 cockle
Cardium spp.
 Cardiida - Tellinidae
"cf. Linearia metastriata" = Linearis, "Linearia sp." = Linearis
"cf. Linearia metastriata" = Linearis tellin clam
Linearia cf. L. metastriata Conrad
"Linearia sp." = Linearis Conrad 1860 tellin clam
Linearia sp. (large)
 Arcida - Cucullaeidae
cf. Cucullaea tippana
cf. Cucullaea tippana Conrad 1858 clam
Cucullaea cf. C. tippana Conrad of Weller
 Myalinida - Inoceramidae
? Inoceramus sp.
? Inoceramus sp. Sowerby 1814 clam
Inoceramus ? sp.
 Ostreida - Gryphaeidae
Gryphaeostrea vomer, Pycnodonte sp., Exogyra sp., Exogyra ponderosa, Exogyra ponderosa erraticostata
Gryphaeostrea vomer Morton 1828 oyster
Gryphaeostrea vomer Morton
Pycnodonte sp. Fischer von Waldheim 1835 oyster
Gryphaea sp. - owens
Exogyra sp. Say 1820 oyster
Exogyra sp.
Exogyra ponderosa oyster
Exogyra ponderosa Roemer
Exogyra ponderosa erraticostata Say 1820 oyster
Exogyra ponderosa erraticostata Stephenson
 Ostreida - Flemingostreidae
Agerostrea falcata, Agerostrea mesenterica
Agerostrea falcata Morton 1827 oyster
Lopha falcata (Morton)
Agerostrea mesenterica Morton 1834 oyster
Ostrea mesenterica Morton
 Pectinida - Anomiidae
Paranomia scabra
Paranomia scabra scallop
Paranomia scabra Morton
 Pectinida - Pectinoidae
Spondylus sp.
Spondylus sp. Linnaeus 1758 scallop
Spondylus sp.
 Pectinida - Neitheoidae
Neithea quinquecostata
Neithea quinquecostata Sowerby 1814 scallop
Neithea quinquecostata Sowerby of Weller
Cephalopoda
 Ammonitida - Pachydiscidae
"Parapachydiscus sp." = Pachydiscus
"Parapachydiscus sp." = Pachydiscus Zittel 1884 ammonite
Parapachydiscus sp.