Notharctus, Leidy. Pr. Ac. Nat. Sc., 1870, p. 114; Cont. to Ext.
Vert. Faun., p. 86; Ann. Rep. U. S. Geol. Survey of Terrs.,
1871, p. 364. _N. tenebrosus_, Leidy, loc. cit.
Hyopsodus, Leidy. Pr. Ac. Nat. Sc., 1870, p. 110; U. S. Survey of
Terrs., 1870, p. 354; do. 1871, p. 362; Cont. to Ext. Vert.
Faun., p. 75.
_H. paulus_, Leidy, loc. cit.
_H. minusculus_, Leidy. Cont. to Ext. Vert. Faun., p. 81.
_H. gracilis_, Marsh. Am. Journ. of Sci., vol. ii., p. 42.
_H. vicarius_, Cope. Described in U. S. Survey of Terrs., 1872, p.
609, as _Microsyops vicarius_. Wheeler's Survey, vol. iv., pt. ii.,
p. 150.
Microsyops, Leidy. Pr. Ac. Nat. Sc., 1872, p. 20; U. S. Survey of
Terrs., 1871, p. 363; Cont. to Ext. Vert. Faun., p. 82.
_M. gracilis_, Leidy, loc. cit. In the "Contributions," Dr. Leidy,
considering _Limnotherium_, Marsh, as a synonym of _Microsyops_, has
called this species _M. elegans_.
Hipposyus, Leidy. Pr. Ac. Nat. Sc., 1872, p. 37; Cont. to Ext.
Vert. Faun., p. 90.
_H. formosus_, Leidy, loc. cit.
_H. robustior_, Leidy Cont. to Ext. Vert. Faun., p. 93; _Notharctus
robustior_. U. S. Geol. Survey of Terrs., 1871, p. 364.
Antiacodon, Marsh. Am. Journ. of Sci., 3d Ser. vol. iv., p. 210.
_A. venustus_, Marsh, loc. cit.
Bathrodon, Marsh. Am. Journ. of Sci., 3d Ser. vol. iv., p. 211.
_B. typus_, Marsh, loc. cit.
Lemuravus, Marsh. Am. Journ. of Sci., 3d Ser. vol. ix., p. 239.
_L. distans_, Marsh, loc. cit.
Limnotherium, Marsh. Am. Journ. of Sci., 3d Ser. vol. ii., p. 43.
_L. tyrannus_, Marsh, loc. cit.
_L. elegans_, Marsh, loc. cit.
_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.
Anaptomorphus, Cope. Pr. Am. Phil. Soc., 1872, p. 554; U. S. Geol.
Survey of Terrs., 1872, p. 549.
_A. æmulus_, Cope, loc. cit.
Oligotomus, Cope. On some Eocene mammals, p. 2; U. S. Geol. Survey
of Terrs., 1872, p. 607.
_O. cinctus_, Cope, loc. cit.
Opisthotomus, Cope. Wheeler's Survey, vol. iv., p. 151, pt. ii.
_O. astutus_, loc. cit., p. 152.
Pantolestes, Cope. Pr. Am. Phil. Soc., 1872, p. 467; Wheeler's
Survey, v. iv., pt. ii., p. 145.
_P. longicaudus_. Pr. Am. Phil. Soc., 1872, p. 467; _Notharctus
longicaudus_, U. S. Geol. Survey of Terrs., 1872, p. 549.
Sarcolemur, Cope. Pr. Ac. Nat. Sc., 1875, p. 256; Wheeler's Survey,
v. iv., pt. ii., p. 147.
_S. pygmæus_, Cope. _Lophiotherium pygmæus_, Pr. Am. Phil. Soc.,
1872, extras July 20; _Antiacodon pygmæus_, U. S. Geol. Survey of
Terrs., 1872, p. 607; _Hyopsodus pygmæus_, Pr. Am. Phil. Soc., 1872,
p. 461.
_S. furcatus_, Cope. _Antiacodon furcatus_. On some Eocene mammals,
p. i.; U. S. Geol. Survey of Terrs., 1872, p. 608.
Thinolestes, Marsh. Am. Journ. Sc., 3d Ser. vol. iv., p. 205.
_T. anceps_, Marsh, loc. cit.