L. affine, Marsh. Am Journ. of Sci., 3d Ser. vol. iv., p. 207.

Mesacodon, Marsh. Am. Journ. of Sci., 3d Ser. vol. iv., p. 212.

M. speciosus, Marsh, loc. cit.

Palæacodon, Leidy. Pr. Ac. Nat. Sc., 1872; p. 21. U. S. Geol. Survey of Terrs., 1871, p. 356; Cont. to Ext. Vert. Faun., p. 122.

P. verus, Leidy, loc. cit.

P. vagus, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 224.

Telmatolestes, Marsh. Am. Jour. of Sc., 3d Ser. vol. iv., p. 206.

T. crassus, Marsh, loc. cit.

Tomitherium, Cope. Pr. Am. Phil. Soc., 1872, p. 470; U. S. Geol. Survey of Terrs., 1872, p. 546; Wheeler's Survey, vol. iv., p. 135, pt. ii.

T. rostratum, Cope, loc. cit.; U. S. Survey, 1872, p. 548.