Where: Texas (31.6° N, 99.8° W: paleocoordinates 1.3° S, 31.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Grape Creek Member (Clyde Formation), Artinskian (290.1 - 279.3 Ma)

• About 125 feet above base.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Primary reference: E. L. Yochelson. 1956. Permian Gastropoda of the southwestern United States. 1. Euomphalacea, Trochonematacea, Pesudophoracea, Anomphalacea, Craspedostomatacea, and Platyceratacea. Bulletin of the American Museum of Natural History 110(3):173-276 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121372: authorized by Matthew Clapham, entered by Matthew Clapham on 02.12.2011

Creative Commons license: CC BY (attribution)