East side of Walnut Canyon, Beta bed 4 (Permian of the United States)

Where: Arizona (35.2° N, 111.5° W: paleocoordinates 8.9° N, 36.5° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Fossil Mountain Member (Kaibab Formation), Kungurian (279.3 - 272.3 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified, white dolomite

• Dolomite, cream, impure, ledge-forming, soft; fossiliferous

Size class: macrofossils

Collection methods: Repository: Grand Canyon National Park Museum (types or all now at USNM)

Primary reference: E. D. McKee. 1938. The environment and history of the Toroweap and Kaibab Formations of northern Arizona and southern Utah. Carnegie Institution of Washington Publication 492:1-268 [G. Webster/G. Webster/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 44950: authorized by David Bottjer, entered by Matthew Clapham on 21.09.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Echinoidea
  - Archaeocidaridae
Archaeocidaris sp.
Archaeocidaris sp. M'Coy 1844 sea urchin