Where: Texas (31.5° N, 104.9° W: paleocoordinates 2.8° N, 34.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: Bone Spring Formation, Kungurian (279.3 - 272.3 Ma)

• Lower part of Bone Spring limestone (molluscan ledge, about 100 feet above base)

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the AMNH

Primary reference: E. L. Yochelson. 1956. Permian Gastropoda of the southwestern United States. 1. Euomphalacea, Trochonematacea, Pesudophoracea, Anomphalacea, Craspedostomatacea, and Platyceratacea. Bulletin of the American Museum of Natural History 110(3):173-276 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 81630: authorized by Matthew Clapham, entered by Matthew Clapham on 05.07.2008

Creative Commons license: CC BY (attribution)