USGS 13852 (Cretaceous of the United States)

Also known as Dallas highway, eastward-facing slope of Big Brushy Creek valley, 3 and 7/10 miles west of Kaufman, Kaufman County;

Where: Kaufman County, Texas (32.6° N, 96.3° W: paleocoordinates 37.9° N, 73.9° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Neylandville Marl Formation, Maastrichtian (72.1 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; sandy, calcareous claystone

• road cut exposes 25 or 30 feet of sandy, calcareous clay (marl), with a layer of large fossiliferous calcium carbonate concretions containing large shells of Placenticeras meeki Bohm, 30 feet above level of bottom land; the layer of concretions is in lower half of the formation but is well above the base.

Size class: mesofossils

Reposited in the USGS

• 13852: C. H. Dane 1927, 14101: L. W. Stephenson 1928, 17119: L. W. Stephenson 1935

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 7536: authorized by Matt Kosnik, entered by Matt Kosnik on 18.07.2000

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Cephalopoda
 Ammonitida - Nostoceratidae
Nostoceras sp.
Nostoceras sp. Hyatt 1894 ammonite
Nostoceras sp.
 Ammonitida - Baculitidae
Baculites claviformis
Baculites claviformis Stephenson 1941 ammonite
Baculites claviformis Stephenson
 Ammonitida - Pachydiscidae
"Parapachydiscus arkansanus" = Pachydiscus (Pachydiscus) arkansanus
"Parapachydiscus arkansanus" = Pachydiscus (Pachydiscus) arkansanus Stephenson 1941 ammonite
Parapachydiscus arkansanus Stephenson
 Ammonitida - Placenticeratidae
Placenticeras meeki
Placenticeras meeki ammonite
Placenticeras meeki Boehm
Bivalvia
 Ostreida - Gryphaeidae
Exogyra cancellata
Exogyra cancellata oyster
Exogyra cancellata Stephenson