Where: Baylor County, Texas (33.7° N, 99.0° W: paleocoordinates 0.2° N, 29.6° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Petrolia Formation (Wichita Group), Artinskian (290.1 - 279.3 Ma)

• Belle Plain Formation of Romer (1974)

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: R. W. Hook and N. Hotton. 1991. A New Sphenacodontid Pelycosaur (Synapsida) from the Wichita Group, Lower Permian of North-Central Texas. Journal of Vertebrate Paleontology 11(1):37-44 [R. Butler/E. Dunne]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 181054: authorized by Richard Butler, entered by Emma Dunne on 16.08.2016

Creative Commons license: CC BY (attribution)