Scalen's, 16 (Belle Plains Formation) (Permian of the United States)

Also known as Locality 16 (Romer 1928), Scalen's Ranch, Scalen's place S, Scalen's pasture, faunal Zone 2, Middle Wichita Group, Texas red-beds, redbeds

Where: Archer County, Texas (33.7° N, 98.9° W: paleocoordinates 0.1° N, 29.5° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

When: Belle Plains Formation (Wichita Group), Artinskian (290.1 - 279.3 Ma)

• Details for Faunal Zone 2 of Romer 1928: "Beyond the horizon of Godwin Creek is found a series of beds about 200 feet in thickness, of a transitional character, in which thin and impure limestones are occasionally present."

•the base of the Artinskian is just above Coleman Junction Formation (Wardlaw 2005, Permophiles), and the "Belle Plains" = Petrolia Formation is below the Waggoner Ranch Formation, which is well above the Coleman Junction and whose base equals the base of the Bead Mountain Formation (Tabor et al. 2002), which is in the middle of the Artinskian (Wardlaw 2005)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; red claystone and limestone

• red-beds and "6-inch limestone"

Size class: macrofossils

Reposited in the AMNH

• Romer (1928) paper is a review of vertebrates from the Texas red-beds with previously unreported (or undetailed) localities.

Primary reference: A. S. Romer. 1928. Vertebrate faunal horizons in the Texas Permo-Carboniferous red beds. University of Texas Bulletin 2801:67-108 [J. Alroy/R. Whatley/W. Clyde]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28240: authorized by John Alroy, entered by Robin Whatley on 02.02.2003

Creative Commons license: CC BY (attribution)

Taxonomic list

Amphibia
 Temnospondyli - Trimerorhachidae
Trimerorhachis sp. Cope 1878 tetrapod
entered as "Trimerorachis"
 Temnospondyli - Eryopidae
Eryops sp. Cope 1877 tetrapod
Osteichthyes
 Cotylosauria - Diadectidae
Diadectes sp. Cope 1878 tetrapod
 Synapsida - Sphenacodontidae
Dimetrodon sp. Cope 1878 synapsid
 Embolomera - Archeriidae
Cricotus sp. Cope 1875 tetrapod