Two New Pelycosaurs from the Lower Permian of Oklahoma

by Richard C. Fox

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Two New Pelycosaurs from the Lower Permian of Oklahoma

BY

Richard C. Fox

In the course of examining material from fissure deposits of early Permian age collected from a limestone quarry near Fort Sill, Oklahoma, the author recovered several tooth-bearing fragments of small pelycosaurs. The fragments were examined, compared with descriptions of known kinds appearing in the literature, and determined to be new genera within the Nitosauridae (Edaphosauria) and Sphenacodontidae (Sphenacodontia).

Appreciation is expressed to Prof. Theodore H. Eaton, Jr., for permission to examine the collections of the University of Kansas from Fort Sill, and for the financial assistance furnished by his National Science Foundation grant (NSF-G8624). I am grateful both to Prof. Eaton and Mr. Dale L. Hoyt for their suggestions regarding this manuscript. The accompanying figures have been drawn by the author.

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Family NITOSAURIDAE

Delorhynchus priscus new genus and new species

(delos, Gr., evident; rhynchos, Gr., neuter, nostril; priscus, L., ancient. Delorhynchus is masculine because of the ending that it acquires when transliterated into Latin.)