USGS 15622 (Cretaceous of the United States)

Also known as Low bluff on east side of Medio Creek, 0.85 mile below the Castroville road crossing, Bexar County;

Where: Bexar County, Texas (29.4° N, 98.5° W: paleocoordinates 35.1° N, 77.6° W)

• coordinate based on political unit

• outcrop-level geographic resolution

When: Discoscaphites conradi ammonoid zone, Corsicana Marl Formation, Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; marl

• about 9 feet of shell marl with Gryphaea, Exogyra and other fossils.

Size class: mesofossils

Reposited in the USGS

• L. W. Stephenson and A. N. Sayre 1931

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: paleoecologic analysis

PaleoDB collection 7561: 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
Bivalvia
 Pectinida - Limidae
? Acesta sayrei
? Acesta sayrei file clam
Lima? sayrei Stephenson