ammonites
Indian Creek, 35 (Arroyo Formation) (Permian of the United States)

Also known as Locality 35 (Romer 1928), Cacops bone bed, faunal Zone 4, Lower Clear Fork Group, Texas red-beds, redbeds

Where: Baylor County, Texas (33.8° N, 99.2° W: paleocoordinates 2.3° N, 28.7° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• "The localities are about 100 to 150 feet above the Lueders limestone." 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: bulk,

• Chicago University Collections among others.

•Romer (1928) paper is a review of vertebrates from the Texas red-beds with previously unreported (or undetailed) localities. Based on the following statement, "A large proportion of the specimens recorded from here are from the Cacops bone bed" some of the specimens listed by Romer 1928 may be from farther afield than the specific gulley mentioned by Williston.

Primary reference: S. W. Williston. 1911. American Permian Vertebrates. University of Chicago Press, Chicago, Illinois 145 p. [J. Alroy/R. Whatley/T. Liebrecht] more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28264: authorized by John Alroy, entered by Robin Whatley on 03.02.2003, edited by Torsten Liebrecht

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