Chevelon Canyon, Alpha bed 5 (Permian of the United States)

Where: Arizona (34.6° N, 110.8° W: paleocoordinates 8.4° N, 36.4° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Harrisburg Member (Kaibab Formation), Roadian (272.3 - 268.8 Ma)

• Alpha member

• group of beds-level stratigraphic resolution

Environment/lithology: lagoonal or restricted shallow subtidal; lithified limestone

• Limestone, gray to brown, very resistant; weathers to ledge with pitted surface; fossiliferous

Size class: macrofossils

Preservation: mold/impression

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 138366: authorized by Matthew Clapham, entered by Jered Karr on 15.01.2013, edited by Matthew Clapham

Creative Commons license: CC BY (attribution)

Taxonomic list

Bivalvia
  -
Bivalvia indet. Linnaeus 1758 clam
Gastropoda
  -
Gastropoda indet. Cuvier 1797 snail
Strophomenata
 Productida - Productidae
"Productus bassi" = Peniculauris bassi
"Productus bassi" = Peniculauris bassi McKee 1938