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Beaver Creek, 42 (Arroyo Formation) (Permian of the United States)

Also known as Locality 42 (Romer 1928), Beaver Creek Wilbarger County, faunal Zone 4, Lower Clear Fork Group, Texas red-beds, redbeds

Where: Wilbarger County, Texas (34.0° N, 99.2° W: paleocoordinates 2.5° N, 28.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Arroyo Formation (Clear Fork Group), Kungurian (279.5 - 272.5 Ma)

• "above the Lueders limestone, and quite probably correspond to the beds to the south of Coffee Creek." Details for Faunal Zone 4 of Romer 1928: "The vertebrate remains are confined to approximately the lowest 250 feet or so of the Clear Fork.."

•the base and top of the Clear Fork Group (i.e., Arroyo, Vale, and Choza formations) are both within the Kungurian: see Wardlaw 2005 (Permophiles) for the base, and DiMichele et al. 2001 (J Paleont) for the top

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; red claystone and conglomeratic sandstone

• "red beds... red clays, with small amounts of sandstone and conglomerates."

Size class: macrofossils

Collection methods: Romer (1928) paper is a review of vertebrates from the Texas red-beds with previously unreported (or undetailed) localities.

Primary reference: A. S. Romer. 1928. Vertebrate faunal horizons in the Texas Permo-Carboniferous red beds. University of Texas Bulletin 2801:67-108 [J. Alroy/R. Whatley/W. Clyde] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28275: authorized by John Alroy, entered by Robin Whatley on 03.02.2003, edited by Torsten Liebrecht and Emma Dunne

Creative Commons license: CC BY (attribution)