USGS 29506 (Cretaceous of the United States)

Also known as Sand about 75-100 yds west of St. georges bridge, north bank of Chesapeake and Delaware canal

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

Environment/lithology: marine

Reposited in the USGS

• Collected by E.G. Kauffman and N.F. 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 6156: 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
 Sorbeoconcha - Naticidae
Euspira sp.
Euspira sp. Agassiz 1837 moon snail
Euspira sp.
 Neogastropoda - Fasciolariidae
Bellifusus sp., cf. Bellifusus curvicostatus
Bellifusus sp. Stephenson 1941 snail
Bellifusus sp.
cf. Bellifusus curvicostatus Wade 1926 snail
Bellifusus cf. B. curvicostasus (Wade)
 Neogastropoda - Buccinidae
Buccinopsis sp., cf. Ornopsis (Pornosis) digressa
Buccinopsis sp. Conrad 1857 true whelk
Buccinopsis sp.
cf. Ornopsis (Pornosis) digressa Wade 1926 true whelk
Ornopsis cf. O. (Pornosis) digressa Wade
 Neogastropoda - Pyropsidae
Pyropsis sp.
Pyropsis sp. Conrad 1860 snail
Pyropsis sp.
 Neogastropoda - Volutidae
Longoconcha sp.
Longoconcha sp. Stephenson 1941 volute
Longoconcha sp.
 Neogastropoda - Turbinellidae
cf. Napulus reesidei
cf. Napulus reesidei Sohl 1964 snail
Napulus cf. N. reesidei Sohl
 Neogastropoda -
Ripleyella sp.
Ripleyella sp. snail
Ripleyella sp.
 Sorbeoconcha - Aporrhaidae
? Anchura sp., ? Graciliala sp., Arrhoges (Latiala) sp.
? Anchura sp. Conrad 1860 snail
Anchura ? sp.
? Graciliala sp. Sohl 1960 snail
Graciliala ? sp.
Arrhoges (Latiala) sp. Gabb 1868 snail
Arrhoges (Latiala) sp.
 Cerithioidea - Turritellidae
Laxispira lumbricalis, Turritella sp., Turritella quadrilira
Laxispira lumbricalis Gabb 1877 turret shell
Laxispira lumbricalis Gabb
Turritella sp. Lamarck 1799 turret shell
Turritella sp.
Turritella quadrilira Johnson 1898 turret shell
Haustator quadrilira Johnson
 Architaenioglossa - Ampullinidae
"Pseudamaura meekana" = Ampullina (Pseudamaura)
"Pseudamaura meekana" = Ampullina (Pseudamaura) snail
Amauropsis meekana Whitfield
 Heterostropha - Ringiculidae
Avellana bullata
Avellana bullata snail
Avellana bullata (Morton)
Cephalopoda
 Ammonitida - Pachydiscidae
"Parapachydiscus sp." = Pachydiscus
"Parapachydiscus sp." = Pachydiscus Zittel 1884 ammonite
Parapachydiscus sp.
Bivalvia
 Trigoniida - Megatrigonioidae
"Scabrotrigonia thoracia" = Pterotrigonia (Scabrotrigonia)
"Scabrotrigonia thoracia" = Pterotrigonia (Scabrotrigonia) clam
Trigonia thoracia Morton of Weller
 Lucinida - Mactromyidae
cf. Unicardium umbonatum
cf. Unicardium umbonatum clam
Umbonicardium cf. U. umbonatum (Whitfield)
 Cardiida - Cardiidae
Granocardium (Granocardium) dumosum, Cardium sp.
Granocardium (Granocardium) dumosum Conrad 1870 cockle
Cardium (Granocardium) dumosum Conrad
Cardium sp. Linnaeus 1758 cockle
Cardium spp.
 Cardiida - Veneridae
cf. Aphrodina tippana, Cyprimeria excavata, Cyprimeria sp.
cf. Aphrodina tippana venus clam
Aphrodina cf. A. tippana Conrad
Cyprimeria excavata venus clam
Cyprimeria excavata (Morton)
Cyprimeria sp. Conrad 1864 venus clam
Cyprimeria sp. (large)
 Cardiida - Arcticidae
Veniella conradi, Etea sp.
Veniella conradi Morton 1833 clam
Veniella conradi Morton of Weller
Etea sp. Conrad 1873 clam
Etea sp.
 Cardiida - Mactridae
Cymbophora sp.
Cymbophora sp. Gabb 1869 clam
Cymbophora sp.
 Pholadida - Corbulidae
Caestocorbula crassiplica
Caestocorbula crassiplica Gabb 1860 clam
Caesticorbula crassaplica (Gabb)
 Hiatellida - Hiatellidae
Panopea decisa
Panopea decisa clam
Panopea decisa Conrad
 Mytilida - Crenellidae
Crenella serica
Crenella serica Conrad 1860 clam
Crenella serica Conrad
 Ostreida - Gryphaeidae
Pycnodonte sp., Exogyra ponderosa erraticostata, Exogyra ponderosa, Exogyra sp., ? Gryphaeostrea sp., Gryphaeostrea vomer
Pycnodonte sp. Fischer von Waldheim 1835 oyster
Gryphaea sp. - owens
Exogyra ponderosa erraticostata Say 1820 oyster
Exogyra ponderosa erraticostata Stephenson
Exogyra ponderosa oyster
Exogyra ponderosa Roemer
Exogyra sp. Say 1820 oyster
Exogyra sp.
? Gryphaeostrea sp. Conrad 1865 oyster
Gryphaeostrea ? sp.
Gryphaeostrea vomer Morton 1828 oyster
Gryphaeostrea vomer Morton
 Ostreida - Flemingostreidae
Agerostrea mesenterica, Agerostrea falcata
Agerostrea mesenterica Morton 1834 oyster
Ostrea mesenterica Morton
Agerostrea falcata Morton 1827 oyster
Lopha falcata (Morton)
 Pectinida - Pectinoidae
Camptonectes bellisculptus, Spondylus sp.
Camptonectes bellisculptus scallop
Camptonectes bellisculptus (Conrad)
Spondylus sp. Linnaeus 1758 scallop
Spondylus sp.
 Pectinida - Neitheoidae
Neithea quinquecostata
Neithea quinquecostata Sowerby 1814 scallop
Neithea quinquecostata Sowerby of Weller
 Pectinida - Limidae
cf. Pseudolimea kerri
cf. Pseudolimea kerri file clam
Lima cf. L. kerri Stephenson
 Pectinida - Anomiidae
Paranomia scabra
Paranomia scabra scallop
Paranomia scabra Morton
 Myalinida - Inoceramidae
? Inoceramus sp.
? Inoceramus sp. Sowerby 1814 clam
Inoceramus ? sp.
 Arcida - Cucullaeidae
cf. Cucullaea tippana
cf. Cucullaea tippana Conrad 1858 clam
Cucullaea cf. C. tippana Conrad of Weller
 Nuculida - Nuculidae
Nucula percrassa
Nucula percrassa nut clam
Nucula percrassa species group