Locality BW (Lower Vale Fm.) (Permian to of the United States)

Also known as Alexander Ranch, TMM 30968

Where: Knox County, Texas (33.7° N, 99.8° W: paleocoordinates 2.2° N, 29.2° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lower Vale Member (Vale Formation), Artinskian to Artinskian (290.1 - 268.8 Ma)

Environment/lithology: "floodplain"; sandstone and conglomerate

• for details see Olson (1958 p. 426)

Size classes: macrofossils, mesofossils

Collected by WPA Mineral Resource Survey in 1936; reposited in the TMM

Collection methods: surface (in situ),

Primary reference: Anonymous. 1941. The eighth quarterly report covering the quarter ending March 31, 1941 for the state-wide paleontologic-mineralogic survey in Texas. A Federal Works Agency Work Projects Administration Project. O.P. No. 665-66-3-233. State Serial No. 300-88 1-47 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180992: authorized by Richard Butler, entered by Emma Dunne on 12.08.2016, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Xenacanthiformes - Xenacanthidae
Xenacanthus sp. Beyrich 1848 elasmobranch
Osteichthyes
 Synapsida - Sphenacodontidae
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes
"Dimetrodon gigashomogenes" = Dimetrodon giganhomogenes Case 1907 synapsid
 Cotylosauria - Diadectidae
Diadectes sp. Cope 1878 tetrapod
in channel conglomerate
Amphibia
 Nectridea - Diplocaulidae
Diplocaulus sp. Cope 1877 tetrapod
in red shale
 Temnospondyli - Eryopidae
Eryops sp. Cope 1877 tetrapod
in flood plain shale