Where: Texas (33.2° N, 97.8° W: paleocoordinates 6.7° S, 33.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Graford Formation (Canyon Group), Kasimovian (307.0 - 303.7 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collection methods: Repository: Bureau of Economic Geology, The University of Texas

Primary reference: F. B. Plummer and G. Scott. 1937. Upper Paleozoic ammonites in Texas. The University of Texas Bulletin 3701:1-516 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 131470: authorized by Matthew Clapham, entered by Matthew Clapham on 25.07.2012

Creative Commons license: CC BY (attribution)