Where: Texas (32.5° N, 98.9° W: paleocoordinates 6.0° S, 33.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Graham Formation, Gzhelian (303.7 - 298.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

Size class: macrofossils

Collected by C. Schuchert; reposited in the YPM

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 131551: authorized by Matthew Clapham, entered by Matthew Clapham on 26.07.2012

Creative Commons license: CC BY (attribution)