Organ Rock Shale (Permian to of the United States)

Also known as Cutler Group

Where: San Juan County, Utah (37.0° N, 110.1° W: paleocoordinates 8.8° N, 34.8° W)

• coordinate stated in text

• local area-level geographic resolution

When: Organ Rock Shale Member (Cutler Formation), Wolfcampian to Wolfcampian (298.9 - 273.0 Ma)

Environment/lithology: "floodplain"; lithified, medium-grained, pebbly conglomerate and lithified sandstone

• "... the fossils occur in conglomerates and in cross-bedded sandstones immediately above, below and at the lateral edges of the lenses of comglomerate. There are also fossiliferous lenses of cross-bedded sandstone within the bodies of the comglomerates".

Size class: macrofossils

Preservation: permineralized, coprolite

Collected by Prof. Charles C. Camp in 1942; reposited in the UCMP

Collection methods: surface (in situ),

Primary reference: P. P. Vaughn. 1964. Vertebrates from the Organ Rock Shale of the Cutler Group, Permian of Monument Valley and vicinity, Utah and Arizona. Journal of Paleontology 38(3):567-583 [A. Behrensmeyer/A. Behrensmeyer/D. Mazierski]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 80110: authorized by Robert Reisz, entered by Robert Reisz on 04.04.2008, edited by Torsten Liebrecht

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Cotylosauria - Diadectidae
Diadectes sp.
Diadectes sp. Cope 1878 tetrapod
 Cotylosauria - Tseajaiidae
Tseajaia campi n. sp.
Tseajaia campi n. sp. Vaughn 1964 tetrapod
Holotype UCMP V4225/59012
 Synapsida - Sphenacodontidae
Ctenospondylus aff. casei, Sphenacodon cf. ferocior
Ctenospondylus aff. casei Romer 1936 synapsid
Sphenacodon cf. ferocior Romer 1937 synapsid
 Synapsida - Ophiacodontidae
Ophiacodon sp.
Ophiacodon sp. Marsh 1878 ophiacodont
Amphibia
 Temnospondyli - Eryopidae
? Eryops sp.
? Eryops sp. Cope 1877 tetrapod
UCLA VP 1642, 1643
 Temnospondyli - Zatracheidae
? Zatracheidae indet.
? Zatracheidae indet. Williston 1910 tetrapod
Osteichthyes
 Palaeoniscoidea -
Palaeoniscoidea indet.
Palaeoniscoidea indet.
scales found in coprolites