Hermit trail, Beta bed 3a (Permian of the United States)

Where: Arizona (36.1° N, 112.2° W: paleocoordinates 10.4° N, 36.2° 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, brown, sandy, cherty/siliceous limestone

• Limestone, buff, sandy, massive, cliff-forming; contains abundant chert nodules and concretions; principal fossil subdivisions from top to bottom are: a, 18 feet; b, 27 feet; c, 13 feet; d, 11 feet; e, 13 feet

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 148680: 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
Anthozoa
 Stauriida - Lophophyllidae
"Lophophyllum" sp.
"Lophophyllum" sp. Milne-Edwards and Haime 1850 horn coral
Crinoidea
  -
Crinoidea indet.
Crinoidea indet. Miller 1821 Sea lily
Strophomenata
 Productida - Productellidae
Echinauris sp., "Productus occidentalis" = Rugatia occidentalis
Echinauris sp. Muir-Wood and Cooper 1960
"Productus occidentalis" = Rugatia occidentalis Newberry 1861
 Productida - Productidae
"Productus bassi" = Peniculauris bassi
"Productus bassi" = Peniculauris bassi McKee 1938
Rhynchonellata
 Spiriferida - Elythidae
"Squamularia" sp.
"Squamularia" sp. Gemmellaro 1899
Probably an Elythid
Stenolaemata
  -
Stenolaemata indet.