Where: Texas (30.2° N, 103.3° W: paleocoordinates 5.7° S, 37.8° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified shale

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 128579: authorized by Matthew Clapham, entered by Matthew Clapham on 12.06.2012

Creative Commons license: CC BY (attribution)