Abstract
In 1929 Dr. Alfred S. Romer and Mr. Paul C. Miller returned to Walker Museum of the University of Chicago with a number of fossil vertebrates from the Karroo system in South Africa. The specimen to be described was one of that number and had been collected by them from near the top of the Tapinocephalus-zone along Hottentot's river in the District of Beaufort West. The specimen, identified as a rather large herbivorous dinocephalian, consists of an almost complete vertebral column, a great number of rib fragments, and the principal portions of the girdles, limbs and feet, both pectoral and pelvic. The skull is missing and only a portion of the lower jaw is preserved. It is proposed to describe the dinocephalian very briefly, to compare it with other dinocephalians, and to summarize that group's relations to other groups of mammal-like reptiles by means of a short discussion of therapsid phylogeny.
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