Also known as Locality 21 (Romer 1928), Locality Vd (Romer & Price 1940), Corn Mountain, Corn Hill, faunal Zone 2, Middle Wichita Group, Texas red-beds, redbeds
Where: Archer County, Texas (33.7° N, 98.9° W: paleocoordinates 0.2° N, 29.4° W)
• coordinate based on nearby landmark
• outcrop-level geographic resolution
When: Belle Plains Formation (Wichita Group), Artinskian (290.1 - 279.3 Ma)
• "about 500 feet above the Coleman Junction." 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
Size class: macrofossils
Collection methods: Not the same as "South side of Tit Mountain butte, TMM 40031" locality (Langston 1986); that collection was obviously made much later than the Tit Mountain collection of Romer (1928), which has less detailed locality data.
•Romer (1928) paper is a review of vertebrates from the Texas red-beds with previously unreported (or undetailed) localities.
Primary reference: E. D. Cope. 1883. Fourth contribution to the history of the Permian formation of Texas. Paleontological Bulletin 36:628-636 [R. Reisz/R. Reisz/M. Carrano]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 28238: authorized by John Alroy, entered by Robin Whatley on 02.02.2003, edited by Torsten Liebrecht, Jana Dummasch and Emma Dunne
Creative Commons license: CC BY (attribution)