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.