Fauna of the Vale and Choza
Subtitle: Diadectes, Xenacanthus, and specimens of uncertain affinities
By: Everett Claire Olson --
Series: Fieldiana -- v. 10, no. 27; Chicago Natural History Museum. [Publication] -- no. 797; Publication (Chicago Natural History Museum) -- 797.
Publisher: Chicago Natural History Museum
Published: 1956
Place of publication: Chicago
Subjects: Reptiles, Fossil; Paleontology -- Permian; Paleontology -- Texas