BC-2 (Chickasha Formation) (Permian to of the United States)

Also known as Chickasha Tongue; Flowerpot Shale; Flowerpot Formation

Where: Blaine County, Oklahoma (36.0° N, 98.3° W: paleocoordinates 4.5° N, 26.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Chickasha Formation (El Reno Group), Roadian to Roadian (272.3 - 265.1 Ma)

• "All the deposits are in that part of the Chickasha Formation delineated by Fay (1962) as the Chickasha Tongue within the Flowerpot Formation. The tongue contains four mapped beds, numbered consecutively from 1 (lowest) to 4 (highest)." BC-2 "horizon lies between beds 2 and 3 of the Chickasha Tongue."

•Minimum age originally entered as >> Capitanian <<. These beds, however, are likely to be older (see, e.g., Reisz & Laurin, 2002, 114(9)).

• bed-level stratigraphic resolution

Environment/lithology: deltaic; red siltstone and red conglomerate

• "The vertebrate fauna in the Chickasha deposits lived on a delta marginal to the sea in which the deposits of the El Reno Group were formed."

Size class: macrofossils

Reposited in the FMNH

Primary reference: E. C. Olson. 1965. New Permian vertebrates from the Chickasha Formation in Oklahoma. Circular Oklahoma Geological Survey 70:1-70 [C. Sidor/C. Sidor/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 27407: authorized by John Alroy, entered by Robin Whatley on 05.12.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Caseasauria - Caseidae
Cotylorhynchus bransoni Olson and Barghusen 1962 synapsid
CNHM UR 983 (dorsal vertebra)
Amphibia
 Microsauria -
? Cymatorhiza kittsi Olson and Barghusen 1962 tetrapod
CNHM UR 922 (single vertebra)