Where: Brewster County, Texas (30.3° N, 103.1° W: paleocoordinates 5.7° S, 37.6° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Uddenites-bearing Shale Member (Gaptank Formation), Gzhelian (303.4 - 298.9 Ma)

• Lower Uddenites-bearing shale Member, brown beds and below. Virgilian.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, chemical,

Primary reference: G. A. Cooper and R. E. Grant. 1972. Permian brachiopods of west Texas, I. Smithsonian Contributions to Paleobiology 14:1-231 [D. Bottjer/M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 43486: authorized by David Bottjer, entered by Matthew Clapham on 14.08.2004, edited by Uta Merkel