Fossil Mountain, Grand Canyon, Beta bed 3 (Permian of the United States)

Where: Arizona (36.2° N, 112.4° W: paleocoordinates 10.2° 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)

• Beta member

• group of beds-level stratigraphic resolution

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

• Limestone, gray; beds fairly thin; chert concretions and nodules throughout and chert bed at base; 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 148695: authorized by Matthew Clapham, entered by Matthew Clapham on 24.07.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Strophomenata
 Orthotetida - Derbyiidae
Derbyia sp.
Derbyia sp. Waagen 1884
 Productida - Productellidae
Echinauris sp.
Echinauris sp. Muir-Wood and Cooper 1960
 Productida - Productidae
"Productus bassi" = Peniculauris bassi
"Productus bassi" = Peniculauris bassi McKee 1938
 Strophomenida - Rugosochonetidae
"Chonetes subliratus" = Dyoros (Dyoros) subliratus
"Chonetes subliratus" = Dyoros (Dyoros) subliratus Girty 1908
Stenolaemata
  -
Stenolaemata indet.