Where: Kay County, Oklahoma (36.3° N, 97.3° W: paleocoordinates 1.3° N, 27.2° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Winfield Formation, Asselian to Asselian (298.9 - 272.3 Ma)

• The Wreford limestone, ,which by the Kansas University Geological Survey is made the base of the Permian, is said to be replaced to the southward by arenaceous beds to which the name Payne has been applied by Kirk. Above this sandstone the Permian of Oklahoma is largely composed of red sandstones and shales. Fossil plants were collected about 2 miles north of Perry, in chocolate red and greenish grits regareded by Gould as probably near the horizon of the Winfield formation of Kansas.

Environment/lithology: terrestrial; green, red sandstone and green shale

Size class: macrofossils

Reposited in the USNM

• More recent work done in the area by Mamay 1954, 1976

Primary reference: D. White. 1912. The characters of the fossil plant Gigantopteris Schenk and its occurrence in North America. Proceedings of the United States National Museum 41:493-516 [H. Sims/S. Ostrowski/A. McGowan]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24626: authorized by Hallie Sims, entered by Heather Lindon on 12.08.2002

Creative Commons license: CC BY (attribution)