Where: Texas (30.4° N, 103.0° W: paleocoordinates 6.2° S, 38.0° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Gaptank Formation, Kasimovian (306.9 - 303.4 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: marine; lithified lithology not reported

Size class: macrofossils

Collected by J.A. Udden, E. Bose in 1914, 1916; reposited in the YPM

Primary reference: E. Böse. 1919. The Permo-Carboniferous ammonoids of the Glass Mountains, west Texas, and their stratigraphic significance. University of Texas Bulletin 1762:1-241 [M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 131119: authorized by Matthew Clapham, entered by Matthew Clapham on 20.07.2012

Creative Commons license: CC BY-NC-ND (attribution-noncommercial-no derivatives)