East side of Toroweap Valley, Beta bed 2, 77 feet (Permian of the United States)

Where: Arizona (36.3° N, 113.0° W: paleocoordinates 10.8° N, 37.1° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

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

• Beta member

• group of beds-level stratigraphic resolution

Environment/lithology: open shallow subtidal; lithified, gray, cherty/siliceous limestone

• Limestone, gray; beds thick and massive; full of gray and brown chert nodules and concretions; weathers to a massive cliff and "pillars of erosion"; fossils scattered throughout, often in concretions

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 148758: authorized by Matthew Clapham, entered by Matthew Clapham on 25.07.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Strophomenata
 Productida - Productellidae
"Marginifera meridionalis" = Kutorginella meridionalis, Echinauris sp.
"Marginifera meridionalis" = Kutorginella meridionalis McKee 1938
Echinauris sp. Muir-Wood and Cooper 1960
Stenolaemata
  -
Stenolaemata indet.