Viverravus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 127.

V. gracilis, Marsh, loc. cit.

V. (?) nitidus, Marsh, loc. cit., p. 205.

Ziphacodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 216.

Z. rugatus, Marsh, loc. cit.

Vulpavus, Marsh. Am. Jour. of Sc., 3d Ser. vol. ii., p. 124.

V. palustris, Marsh, loc. cit.

Miacis, Cope. Pr. Am. Phil. Soc., 1872, p. 470.

M. parvivorus, loc. cit.; Viverravus parvivorus, U. S. Geol. Survey of Terrs., 1872, p. 560.

Mesonyx, Cope. Pr. Am. Phil. Soc., 1872. p. 460; U S. Geol. Survey of Terrs., 1872, p. 550.