Where: Texas (30.4° N, 103.2° W: paleocoordinates 1.4° N, 33.1° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Willis Ranch Member (Word Formation), Roadian (272.5 - 268.0 Ma)

• Equivalent to top of Third Limestone Member of P.B. King. Conodont Jinogondolella nankingensis nankingensis indicates Roadian age (Henderson & Mei, 2003).

• group of beds-level stratigraphic resolution

Environment/lithology: marine; 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 43553: authorized by David Bottjer, entered by Matthew Clapham on 14.08.2004, edited by Sabine Nürnberg