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

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