LITERATURE CITED
Bergounioux, Frederic-Marie.
1935. Contribution a l'étude paléontoligique des chéloniens: Chéloniens fossiles du Bassin d'Aquitaine. Memoires de la Société géologique de France, vol. 11, Mem. 25, pp. 1-215, 44 figs., 16 pls.
1937. Relations fauniques entre des chélonien fossiles de l'Espagne et de la France. Comptes Rendus Acad. Sci. Paris, vol. 204, pp. 793-795.
1938. Chéloniens fossiles d'Espagne. Bulletin de la Societe d'histoire Naturelle de Toulouse, vol. 72, pp. 257-288, 7 figs.
Chaney, R. W., and Elias, M. K.
1936. Late Tertiary Floras from the High Plains, with a Chapter on the Lower Pliocene Vertebrate Fossils from the Ogallala Formation (Lavern Zone) of Beaver County, Oklahoma, by Curtis J. Hesse. Publ. Carnegie Inst. Wash., No. 476, pp. 1-72, 11 figs., 7 pls.
Frye, J. C., and Hibbard, C. W.
1941. Pliocene and Pleistocene Stratigraphy and Paleontology of the Meade Basin, Southwestern Kansas. University of Kansas Publications, State Geological Survey of Kansas, Bulletin 38, pp. 389-424, 3 figs., 4 pls.