Locality KJ (Upper Vale Fm.) (Permian of the United States)

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: wet floodplain; green, red shale and sandstone

• "Even red and green shales with interbedded thick layers of sandstone and thin sheets of conglomerate. All apparently flood plain in origin. One large channel deposit and a few fine-grained channel deposits. Occasional pond deposits of light red shale. Westernmost beds transitional between Vale and Choza Formations." (Olson, 1958)
• "The channel fill is largely clay pebble conglomerate, with pebbles ranging from a few millimeters to about 8 cm. in diameter. Rounding of the pebbles is uniformly high, but sphericity is varied. [...] The coarsest material tend to lie at the center of the channel, whereas the marginal parts are predominantly sand or clay with fine scattered pebbles." Olson (1948, p. 191)

Size class: macrofossils

Collected by E. C. Olson in 1946, 1947

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 177017: authorized by Richard Butler, entered by Emma Dunne on 16.03.2016

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Amphibia
 Nectridea - Diplocaulidae
Diplocaulus recurvatus
Diplocaulus recurvatus Olson 1952 tetrapod
 Temnospondyli - Trimerorhachidae
Trimerorhachis sp.
Trimerorhachis sp. Cope 1878 tetrapod
Osteichthyes
 Synapsida - Sphenacodontidae
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes Case 1907 synapsid
 Recumbirostra - Molgophidae
"Lysorophus tricarinatus" = Brachydectes newberryi
"Lysorophus tricarinatus" = Brachydectes newberryi Cope 1868 amniote