Marsh. Am. Jour. of Sc., 3d Ser. vol. ix., p. 221; vol. xi., p. 249.
Anchippodus, Leidy. Pr. Ac. Nat. Soc., 1868, p. 232; Ext. Mam. N.
Am., p. 403.
_Trogosus._ Pr. Ac, 1871, p. 113; Cont. to Ext. Vert. Faun., p. 71.
_A. riparius_, Leidy. Pr. Ac. Nat. Soc., 1868, p. 232; Cont. to Ext.
Vert. Faun., p. 71 (as _Trogosus castoridens_).
_A. vetulus_, Leidy; _Trogosus vetulus_, Pr. Ac. Nat. Sc., 1871, p.
229; Cont. to Ext. Vert. Faun., p. 75.
Tillotherium. Am. Jour. of Sc., 3d Ser. vol. v., p. 485; Ibid. vol.
xi., p. 249.
_T. hydracoides_, Marsh, loc. cit.
_T. latidens_, Marsh, loc. cit., vol. vii., p. 533.
_T. fodiens_, Marsh, loc. cit., vol. ix., p. 241.
Stylinodon, Marsh. Am. Jour. of Sc., 3d Ser. vol. vii., p. 532.
_S. mirus_, loc. cit.