Where: Texas (32.9° N, 98.3° W: paleocoordinates 6.8° S, 33.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• About 100 feet below the base of the Merriman limestone, Graford formation

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by F.R. Schenck

• Repository: Bureau of Economic Geology, The University of Texas. Collected by F. R. Schenck, geologist for Prairie Oil and Gas Company.

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 131373: authorized by Matthew Clapham, entered by Matthew Clapham on 24.07.2012

Creative Commons license: CC BY (attribution)