Big Wichita, Cummins, 23 (Belle Plains Formation) (Permian of the United States)

Also known as Locality 23 (Romer 1928), Locality Ve (Romer & Price 1940), faunal Zone 2, Middle Wichita Group, Texas red-beds, redbeds

Where: Baylor County, Texas (33.7° N, 99.0° W: paleocoordinates 0.2° N, 29.6° W)

• coordinate based on nearby landmark

• local area-level geographic resolution

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

• "Just below the Beaverburk limestone... probable elevation above the Coleman Junction of about 525 feet." 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, 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

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

Primary reference: E. D. Cope. 1884. Fifth contribution to the knowledge of the fauna of the Permian formation of Texas and the Indian Territory. Paleontological Bulletin 39:28-47 [J. Mueller/T. Liebrecht/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 28148: authorized by John Alroy, entered by Robin Whatley on 25.01.2003, edited by Torsten Liebrecht and Emma Dunne

Creative Commons license: CC BY (attribution)

Taxonomic list

Osteichthyes
 Cotylosauria - Diadectidae
Diadectes sp.3 Cope 1878 tetrapod
 Recumbirostra - Pantylidae
Pantylus cordatus2 Cope 1881 amniote
Collected by P. C. Miller of University of Chicago in 1908 (Mehl, 1912)
 Synapsida - Ophiacodontidae
Varanosaurus sp.3, "Theropleura retroversa" = Ophiacodon retroversus1, "Clepsydrops leptocephalus n. sp." = Ophiacodon retroversus, Ophiacodon major4
Varanosaurus sp.3 Broili 1904 ophiacodont
"Theropleura retroversa" = Ophiacodon retroversus1 Cope 1878 ophiacodont
"Clepsydrops leptocephalus n. sp." = Ophiacodon retroversus Cope 1878 ophiacodont
AMNH 4155 (type); originally entered as Theropleura retroversa
Ophiacodon major4 Romer and Price 1940 ophiacodont
AMNH 4083
 Synapsida - Sphenacodontidae
Dimetrodon sp.3 Cope 1878 synapsid
Amphibia
 Temnospondyli - Eryopidae
Eryops sp.3 Cope 1877 tetrapod