Where: Knox County, Texas (33.8° N, 99.5° W: paleocoordinates 2.4° N, 29.0° W)
• coordinate estimated from map
• small collection-level geographic resolution
When: Vale Formation (Clear Fork Group), 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);
•"base of upper part of Vale" (Olson, 1954)
•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 Locality KH into four sub-locations: Clay Hill site, Diplocaulus Quarry Site, and Chocolate Hill 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 177000: authorized by Richard Butler, entered by Emma Dunne on 15.03.2016
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
Xenacanthus sp. Beyrich 1848 elasmobranch | |
Amphibia | |
Diplocaulus recurvatus Olson 1952 tetrapod | |
Eryops megacephalus Cope 1877 tetrapod | |
Osteichthyes | |
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes Case 1907 synapsid |