MOSASAURIDAE.
Mosasauridae Conybeare, in Cuvier, Ossem. Foss., 2nd ed., p. 338, 1824.
Clidastidae Cope, Extinct Batr. Rept. and Aves of N. Amer., Trans. Amer. Phil. Soc. xiv, p. 50, 1870.
Edestosauridae Marsh, Amer. Journ. Sci. xxi, p. 59, July 1878.