Where: Texas (31.2° N, 98.7° W: paleocoordinates 13.1° S, 41.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Barnett Formation, Serpukhovian (330.9 - 323.2 Ma)

• Limestone ledge in top of Barnett Shale (upper Chesterian, probably Pendleian)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified limestone

Size class: macrofossils

Collection methods: Repository: Plummer Collection, 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 128624: authorized by Matthew Clapham, entered by Matthew Clapham on 13.06.2012

Creative Commons license: CC BY (attribution)