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USNM703a, Old Word Ranch, Glass Mountains (Permian of the United States)

Also known as Reef 3472

Where: Brewster County, Texas (30.4° N, 103.1° W: paleocoordinates 1.1° N, 33.3° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Road Canyon Formation, Kungurian (279.5 - 272.5 Ma)

• Bioherms at base of Road Canyon Formation. Lower part of Road Canyon Formation contains conodont Mesogondolella idahoensis lamberti, indicating Kungurian age according to Henderson & Mei (2003).

• group of beds-level stratigraphic resolution

Environment/lithology: reef, buildup or bioherm; 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 43513: authorized by David Bottjer, entered by Matthew Clapham on 14.08.2004

Creative Commons license: CC BY (attribution)