Where: Texas (33.4° N, 100.3° W: paleocoordinates 2.4° N, 29.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Blaine Formation, Kungurian (279.3 - 272.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified, dolomitic limestone

Size class: macrofossils

Collected by W.F. Cummins in 1889

• Collected by Cummins in 1889 and deposited in Texas Geological Survey. Cotypes in Department of Geology of Texas Christian University and in the Bureau of Economic Geology, The University of Texas.

Primary reference: J. P. Smith. 1903. The Carboniferous ammonoids of America. Monographs of the United States Geological Survey 52:1-211 [M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 128589: authorized by Matthew Clapham, entered by Matthew Clapham on 12.06.2012

Creative Commons license: CC BY (attribution)