1928. Vertebrate faunal horizons in the Texas Permo-Carboniferous redbeds. Univ. Texas Bull., 2801:67-108, 7 figs.
1956. Osteology of the reptiles. Univ. Chicago Press, xxii + 772 pp., 248 figs.
ROMER, A. S. and PRICE, L. I.
1940. Review of the Pelycosauria. Geol. Soc. Amer. Special Papers, No. 28, x + 538 pp., 71 figs., 46 pls.
WATSON, D. M. S.
1948. _Dicynodon_ and its allies. Proc. Zool. Soc. London, 118:823-877, 20 figs., 1 pl.
1954. On _Bolosaurus_ and the origin and classification of reptiles. Bull. Mus. Comp. Zool., 111(9):200-449, 37 figs.
_Transmitted December 5, 1963._
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