USGS 16162 (Cretaceous of the United States)

Also known as Land of E. A. Stevens, northeastward-facing slope of Big Caddo Creek valley, 1.8 miles northeast of Quinlan, Hunt County;

Where: Hunt County, Texas (33.1° N, 96.1° W: paleocoordinates 38.4° N, 73.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Nacatoch Sand Formation, Maastrichtian (72.1 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; calcareous sandstone

• calcareous fossiliferous concretions derived from marine sand, on slope about 20 feet above level of bottom land, probably above middle of formation.

Size class: mesofossils

Reposited in the USGS

• 16162: L .W. Stephenson 1932, 16171: F. B. Plummer 1932

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 7564: authorized by Matt Kosnik, entered by Matt Kosnik on 18.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Scaphopoda
 Gadilida - Gadilidae
Cadulus obnutus tusk shell
Cadulus obnutus (Conrad)
Bivalvia
 Arcida - Arcidae
Breviarca plummeri clam
Breviarca plummeri Stephenson
Breviarca nolani clam
Breviarca nolani Stephenson
 Carditida - Crassatellidae
Crassatella quinlanensis clam
Crassatella quinlanensis Stephenson
 Lucinida - Lucinidae
Phacoides mattiformis clam
Lucina mattiformis Stephenson
 Pholadida - Corbulidae
Corbula rockensis clam
Corbula rockensis Stephenson
 Cardiida - Cardiidae
Ethmocardium (Ethmocardium) welleri cockle
Cardium (Ethmocardium) welleri Stephenson
Pleuriocardia (Trachycardium) eufaulensis huntanum Scott 1978 cockle
Cardium (Trachycardium) eufaulensis huntanum Stephenson
 Cardiida - Tellinidae
Tellina munda tellin clam
Tellina munda Stephenson
 Cardiida - Veneridae
Aphrodina tippana venus clam
Aphrodina tippana Conrad
Cyprimeria depressa venus clam
Cyprimeria depressa Conrad
 Cardiida - Mactridae
Cymbophora berryi clam
Cymbophora berryi Gardner
Cymbophora inflata clam
Cymbophora inflata Stephenson
 Cardiida - Glossidae
Glossus hendersoni clam
Isocardia hendersoni Stephenson
 Poromyida - Poromyidae
Liopistha formosa clam
Liopistha formosa Stephenson
 Poromyida - Cuspidariidae
Cuspidaria sp. Dall 1886 clam
Cuspidaria spp.
 Pandorida - Laternulidae
Anatimya anteradiata texana Conrad 1860 clam
Anatimya anteradiata texana Stephenson
 Nuculida - Nuculidae
Nucula chatfieldensis nut clam
Nucula chatfieldensis Stephenson
Nucula perequalis nut clam
Nucula perequalis Conrad
Gastropoda
 Heterostropha - Pyramidellidae
Creonella triplicata Wade 1917 snail
Creonella triplicata Wade
 Heterostropha - Ringiculidae
"Ringicula pulchella" = Ringicula (Ringicula) pulchella
"Ringicula pulchella" = Ringicula (Ringicula) pulchella Shumard 1861 snail
Ringicula pulchella Shumard
 Sorbeoconcha - Naticidae
Gyrodes subcarinatus moon snail
Gyrodes subcarinatus Stephenson
 Neogastropoda - Melongenidae
? Busycon sp. Röding 1798 whelk
Busycon? sp.
 Neogastropoda - Paladmetidae
Paladmete corbuliformis Stephenson 1941 snail
Paladmete corbuliformis Stephenson
 Sorbeoconcha - Aporrhaidae
? Anchura caddoensis snail
Anchura? caddoensis Stephenson