Also known as three-channel hill, "fish quarry"
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: Vale Formation (Clear Fork Group), Kungurian (279.3 - 272.3 Ma)
• "The locality [...] KF, was assigned to the upper Vale in an earlier paper. More recent field work has shown that it comprises beds that must be assigned to the middle rather than the upper part of the Vale." (Olson, 1954 p. 213)
•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: "channel"; pebbly, green, red conglomerate and fine-grained, green siliciclastic
•specimen "was preserved in a nodule that had weathered from a conglomeratic deposit of channel origin." (Olson, 1951 p. 89) other specimens are from a quarry in fine-grained, green channel deposits
Size class: macrofossils
Preservation: concretion
Collected by E. C. Olson in 1946-1948; reposited in the FMNH
Primary reference: E. C. Olson. 1948. A Preliminary Report on Vertebrates from the Permian Vale Formation of Texas. Journal of Geology 56:186-198 [J. Mueller/T. Liebrecht]more details
Purpose of describing collection: taxonomic analysis
PaleoDB collection 27704: authorized by John Alroy, entered by Robin Whatley on 20.12.2002, edited by Matthew Carrano, Torsten Liebrecht and Emma Dunne
Creative Commons license: CC BY (attribution)
Taxonomic list
Chondrichthyes | |
Xenacanthus sp. Beyrich 1848 elasmobranch | |
Osteichthyes | |
Gnathorhiza dikeloda n. sp.1
| |
Amphibia | |
| |
Diplocaulus sp. Cope 1877 tetrapod | |
Osteichthyes | |
? Edaphosaurus sp. Cope 1882 synapsid | |
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes3
| |
Gymnarthridae indet. Case 1910 amniote | |
"Lysorophus sp." = Brachydectes
"Lysorophus sp." = Brachydectes Cope 1868 amniote | |
Reptilia | |
| |
Osteichthyes | |
Waggoneria knoxensis n. gen. n. sp.1
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