Where: Cowley County, Kansas (37.2° N, 97.0° W)

• Paleocoordinates: 1.1° N, 27.0° W (Wright 2013)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Fort Riley Limestone Member (Barneston Limestone Formation), Sakmarian to Sakmarian (293.5 - 283.3 Ma)

• "The equivalents of the Stillwater in southern Kansas and in Osage and Kay counties, Oklahoma, consist of a series of limestones and shales [...] named, in ascending order as follows: Cottonwood limestone and Garrison shale of the Council Grove group, the Wreford limestone, Matfield shale, Florence flint, Fort Riley limestone, Doyle shale, and Winfield limestone of the Chase group, and the Luta limestone, Enterprise shale, and Herington limestone members of the Marion formation of the Sumner group [...] The Stillwater forms the lowest division of the Oklahoma Permian red beds, its base being placed at the base of cottonwood limestone which is accepted as the base of the Kansas Permian" (Gould, 1930, Proceedings of the Oklahoma Academy of Science for 1930). The Stillwater beds are considered "contemporaneous" to the Wichita beds of Texas (Gould, 1930).

•The stratigraphic chart of Sawin et al. (2008, Current Research in Earth Sciences, Bulletin 254, part 2 [http://www.kgs.ku.edu/Current/2008/Sawin/index.html]) shows the Fort Riley Limestone as the topmost member of the Barneston Ls. Fm., the latter, according to the authors, being the Late Sakmar-Early Artinsk in age.

• member-level stratigraphic resolution

Environment/lithology: marine; lithology not reported

Size class: macrofossils

Primary reference: R. R. Reisz. 1986. Pelycosauria. Handbuch der Paläoherpetologie / Encyclopedia of Paleoherpetology 17A:1-102 [J. Mueller/J. Dummasch/T. Liebrecht]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80732: authorized by Johannes Mueller, entered by Jana Dummasch on 06.05.2008

Creative Commons license: CC0 (CC0)