Palæontological Report of the Princeton Scientific Expedition of 1877

by Henry Fairfield Osborn; William Berryman Scott; Francis Speir

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.