Eastern end of Arkansas River Canyon (Permian of the United States)

Where: Fremont County, Colorado (38.4° N, 105.8° W: paleocoordinates 9.0° N, 30.9° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Permian (298.9 - 251.9 Ma)

Environment/lithology: terrestrial; gray shale

• Dark gray shale

Size class: macrofossils

Collection methods: surface (in situ),

Primary reference: C. A. Arnold. 1941. Some Paleozoic plants from Central Colorado and their stratigraphic significance. Contrib. Mus. Paleontol. University of Michigan 6:59-70 [H. Sims/S. Ostrowski/H. Sims]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 33037: authorized by Hallie Sims, entered by Alistair McGowan on 22.07.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Walchia
  -
Pinopsida
 Cordaitanthales -