Also known as west of Williams Ranch

Where: Baylor County, Texas (33.7° N, 99.0° W: paleocoordinates 0.1° N, 29.6° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: Petrolia Formation (Wichita Group), Artinskian (290.1 - 279.3 Ma)

• Petrolia Fm. is formerly known as Belle Plains Fm. (see Hentz, 1988, The University of Texas at Austin Bureau of Economic Geology, Report of Investigations, 170, pp. 1-55)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: J. Clark and R. L. Carroll. 1973. Romeriid reptiles from the Lower Permian. Bulletin of the Museum of Comparative Zoology 144(5):353-407 [J. Mueller/T. Liebrecht/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80741: authorized by Johannes Mueller, entered by Jana Dummasch on 06.05.2008, edited by Torsten Liebrecht

Creative Commons license: CC BY (attribution)