Where: Knox County, Texas (33.7° N, 99.6° W: paleocoordinates 2.4° N, 29.0° W)

• coordinate estimated from map

• small collection-level geographic resolution

When: "Bullwagon" Member (Vale Formation), Kungurian (279.3 - 272.3 Ma)

• "Robert Roth, of the Humble Oil and Refining Company of Wichita Falls, Texas, believes that surface and subsurface data show that the beds in question are part of the 'Bullwagon' member of the Vale formation. This places the section high in the Vale, just below the Choza." Olson (1948 p. 190);

•the base and top of the Clear Fork Group (i.e., Arroyo, Vale, and Choza formations) are both within the Kungurian: see Wardlaw 2005 (Permophiles) for the base, and DiMichele et al. 2001 (J Paleont) for the top

• member-level stratigraphic resolution

Environment/lithology: coarse channel fill; pebbly, green, red conglomerate

Size class: macrofossils

Reposited in the FMNH

• Olson (1958) subdivided the main locality into two sites: Quarry site and High channel site.

Primary reference: E. C. Olson. 1958. Fauna of the Vale and Choza: Summary, Review, and Integration of the Geology and the Faunas. Fieldiana Geology 10(32):397-448 [R. Butler/E. Dunne]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 177003: authorized by Richard Butler, entered by Emma Dunne on 15.03.2016

Creative Commons license: CC BY (attribution)