ammonites
USNM741h, Alacran Mountain, Hueco Mountains (Permian to of the United States)

Where: Texas (31.9° N, 106.0° W: paleocoordinates 0.6° N, 36.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Hueco Formation, Asselian to Asselian (298.9 - 279.5 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lithified limestone

Size class: macrofossils

Preservation: replaced with silica

Reposited in the USNM

Collection methods: bulk, chemical,

Primary reference: G. A. Cooper and R. E. Grant. 1972. Permian brachiopods of west Texas, I. Smithsonian Contributions to Paleobiology 14:1-231 [D. Bottjer/M. Clapham/M. Clapham] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 106287: authorized by Matthew Clapham, entered by Matthew Clapham on 06.03.2011

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