UO 2216-2, "Petrified Snake locality", Grindstone-Twelvemile Creek area (Permian of the United States)

Where: Crook County, Oregon (44.0° N, 119.7° W: paleocoordinates 18.4° N, 38.2° W)

• coordinate estimated from map

• local area-level geographic resolution

When: Coyote Butte Formation, Kungurian (279.3 - 272.3 Ma)

• Correlated on the basis of brachiopods to the "Leonard" or lower "Word" Formations (present-day Hess and Road Canyon Formations), indicating a Artinskian-Roadian age. Correlations with Russia suggest mid to late Artinskian age.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; limestone

• Crinoidal limestone; Sandstone beds are widespread but poorly exposed in the Coyote Butte Formation, limestone lenses are olive-grey, crinoidal fusulinid limestones in lower part of formation; Purer, finer-grained, deep-olive in colour and better bedded in the upper part with rarer fusulinids and common brachiopods.

Size class: macrofossils

Primary reference: G. A. Cooper. 1957. Permian brachiopods from central Oregon. Smithsonian Miscellaneous Contributions 134(12):1-79 [D. Bottjer/M. Clapham/M. Clapham]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 129201: authorized by Matthew Clapham, entered by Matthew Clapham on 21.06.2012

Creative Commons license: CC BY (attribution)

Taxonomic list

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Rhynchonellata
 Terebratulida - Dielasmatidae
Dielasma brevicostatum