Snap Canyon, USGS 22267-PC (Carboniferous of the United States)

Also known as Snap Canyon 9 ft above base of formation

Where: Arizona (36.2° N, 113.8° W: paleocoordinates 1.6° N, 43.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Watahomigi Formation (Supai Group), Morrowan (323.2 - 318.6 Ma)

• The Watahomigi is comprised of three informal units: a lower slope unit, a middle cliff unit, and an upper slope unit.

• group of beds-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, coarse-grained, gray dolomite

• Dolostone, pinkish-gray, coarse- to very coarse grained, thick-bedded (2-4 ft); containes styolites, jasper lenses and possible stromatolite structures at 33 ft; has cavernous texture, possibly reefoid, at 40 ft; fossiliferous (many colonial corals) at 55 ft above base

Size class: macrofossils

Reposited in the USGS

Primary reference: E. D. McKee. 1982. The Supai Group of the Grand Canyon. United States Geological Survey Professional Paper 1173 [J. Alroy/C. Simpson/C. Simpson]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 42667: authorized by John Alroy, entered by Carl Simpson on 03.08.2004, edited by Pete Wagner

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Rhynchonellata
 Athyridida - Athyrididae
Composita sp.
Composita sp. Brown 1849
Strophomenata
 Productida -
Productida indet.
Productida indet. Sarycheva and Sokolskaya 1959
 Productida - Linoproductidae
Linoproductus pumilis
Gastropoda
  -
Gastropoda indet.
Gastropoda indet. Cuvier 1795 snail
 Bellerophontida -
Bellerophontoidea indet.
Bellerophontoidea indet. M'Coy 1851 snail
Bivalvia
 Actinodontida - Oriocrassatellidae
Oriocrassatella sp.
Oriocrassatella sp. Etheridge 1907 clam
 Cardiidia - Sanguinolitidae
Wilkingia terminalis
Wilkingia terminalis Hall 1852 clam
 Trigoniida - Schizodidae
Schizodus sp., Schizodus amplus
Schizodus sp. King 1844 clam
Schizodus amplus Meek and Worthen 1870 clam
 Mytilida - Mytilidae
Promytilus sp.
Promytilus sp. Newell 1942 mussel
 Myalinida - Myalinidae
Selenimyalina sp., Myalina (Myalina) sp., Septimyalina sp.
Selenimyalina sp. Newell 1942 clam
Myalina (Myalina) sp. de Koninck 1842 clam
Septimyalina sp. Newell 1942 clam
 Pectinida - Aviculopectinidae
Aviculopecten sp.
Aviculopecten sp. M'Coy 1851 scallop
Trilobita
 Proetida - Phillipsiidae
Paladin sp.
Paladin sp. Weller 1936 trilobite