Where: Arizona (31.7° N, 110.1° W: paleocoordinates 5.6° N, 38.0° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• About 225 feet above base.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Primary reference: E. L. Yochelson. 1960. Permian Gastropoda of the southwestern United States. 3. Bellerophontacea and Patellacea. Bulletin of the American Museum of Natural History 119(4):208-293 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 121503: authorized by Matthew Clapham, entered by Matthew Clapham on 05.12.2011

Creative Commons license: CC BY (attribution)