ammonites
USNM712b, Orogrande (Permian of the United States)

Where: New Mexico (32.4° N, 106.1° W: paleocoordinates 3.5° N, 35.3° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hueco Formation, Artinskian (290.1 - 279.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Primary reference: R. L. Batten. 1958. Permian Gastropoda of the southwestern United States. 2. Pleurotomariacea: Portlockiellidae, Phymatopleuridae, and Eotomariidae. Bulletin of the American Museum of Natural History 114(2):153-246 [D. Bottjer/M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 101771: authorized by Matthew Clapham, entered by Matthew Clapham on 02.01.2011

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