LITERATURE CITED
Reading edition
Peabody, F. E. 1961. Annual growth zones in living and fossil vertebrates. Jour. Morph. 108 (1): 11-62, 69 figs., January.
Romer, A. S. 1956. Osteology of the reptiles. The University of Chicago Press, Chicago, xxi + 772 pp., 248 figs.
Romer, A. S., and Price, L. I. 1940. Review of the Pelycosauria. Geol. Soc. America, Spec. Pap., 28: x + 538 pp., 71 figs., 46 pls., 8 tables, December 6.
Vaughn, P. P. 1958. On a new pelycosaur from the lower Permian of Oklahoma, and the origin of the family Caseidae. Jour. Paleont., 32:981-991, 1 fig., September.
Transmitted March 15, 1962.