USGS 07085 (Cretaceous of the United States)

Also known as Right bank of Cibolo Creek,about 1.5 miles west of Zuehl, in Bexar County;

Where: Bexar County, Texas (29.4° N, 98.5° W: paleocoordinates 35.2° N, 77.1° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Kemp Clay Formation, Maastrichtian (72.1 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; calcareous claystone and sandstone

• greenish-gray clay with interbedded masses of cross-bedded fine calcareous fossiliferous sandstone, some of which are found washed out into the bed of the creek nearby. 7721: boulders of calcareous fossiliferous sandstone loose in bed of Cibolo Creek.

Size class: mesofossils

Reposited in the USGS

• 7085: Alexander Deussen 1910, 7720: L. W. Stephenson 1911, 7721: L. W. Stephenson 1911

Primary reference: L. W. Stephenson. 1941. The larger invertebrate fossils of the Navarro group of Texas. The University of Texas Publication 4101:1-625 [M. Kosnik/M. Kosnik]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 7489: authorized by Matt Kosnik, entered by Matt Kosnik on 18.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

unclassified
  -
Pinella reticulata
Pinella reticulata Stephenson
Polychaeta
 Sabellida - Serpulidae
Serpula cretacea
Serpula cretacea (Conrad)
Scaphopoda
 Dentaliida - Dentaliidae
Dentalium sp. Linnaeus 1758 tusk shell
Dentalium spp.
Bivalvia
 Ostreida - Flemingostreidae
Agerostrea falcata Morton 1827 oyster
Ostrea falcata Morton
 Ostreida - Gryphaeidae
Pycnodonte mutabilis oyster
Gryphaea mutabilis Morton
"Exogyra costata" = Exogyra (Exogyra) costata Say 1820 oyster
Exogyra costata Say
 Pectinida - Pectinoidae
Camptonectes (Camptonectes) bubonis Stephenson 1941 scallop
Pecten (Camptonectes) bubonis Stephenson
 Carditida - Crassatellidae
Crassatella vadosa bexarensis Lamarck 1799 clam
Crassatella vadosa bexarensis Stephenson
 Carditida - Carditidae
Vetericardiella webbervillensis clam
Vetericardia webbervillensis Stephenson
 Cardiida - Arcticidae
Veniella conradi Morton 1833 clam
Veniella conradi (Morton)
 Trigoniida - Trigoniidae
Trigonia sp. Bruguière 1789 clam
Trigonia sp.
 Nuculida - Nuculidae
Nucula ciboloensis nut clam
Nucula ciboloensis Stephenson
Cephalopoda
 Ammonitida - Sphenodiscidae
Sphenodiscus pleurisepta Conrad 1857 ammonite
Sphenodiscus pleurisepta (Conrad)
Gastropoda
 Patellida - Lottiidae
? Acmaea occidentalis limpet
Acmaea? occidentalis (Hall and Meek)
 Cerithioidea - Turritellidae
Turritella vertebroides jonesi Lamarck 1799 turret shell
Turritella vertebroides jonesi Stephenson
 Sorbeoconcha - Naticidae
Euspira rectilabrum Conrad 1858 moon snail
Polinices rectilabrum (Conrad)
Gyrodes supraplicatus Conrad 1858 moon snail
Gyrodes supraplicatus (Conrad)
 Neogastropoda - Pyropsidae
Pyropsis lanhami Stephenson 1941 snail
Pyropsis lanhami Stephenson
 Neogastropoda - Buccinidae
Hydrotribulus asper true whelk
Hydrotribulus asper Stephenson
 Neogastropoda - Melongenidae
Deussenia ciboloensis snail
Deussenia ciboloensis Stephenson
 Neogastropoda - Fasciolariidae
? Graphidula multicostata Stephenson 1941 snail
Graphidula? multicostata Stephenson
? Piestochilus levis Stephenson 1941 snail
Piestochilus? levis Stephenson
? Drilluta sp. Wade 1916 snail
Drilluta? ssp.
? Bellifusus deatsvillensis snail
Bellifusus? deatsvillensis Stephenson
 Neogastropoda - Paladmetidae
Paladmete elegans snail
Paladmete elegans Stephenson
 Sorbeoconcha - Aporrhaidae
? Arrhoges ciboloensis snail
Anchura? ciboloensis Stephenson
Anchura bexarensis snail
Anchura bexarensis Stephenson