Where: Arizona (36.2° N, 112.3° W: paleocoordinates 10.1° N, 36.4° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

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

• Near top of "beta" member

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified limestone

Size class: macrofossils

Collected by Kenneth Allen

Primary reference: L. R. David. 1944. A Permian shark from the Grand Canyon. Journal of Paleontology 18(1):90-93 [C. Bell/C. Bell]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 90277: authorized by Matthew Clapham, entered by Matthew Clapham on 15.07.2009

Creative Commons license: CC BY (attribution)