Subfamily Choloepinae Gray, 1871 . Proc. Zool. Soc. Lond., 1871:430.

COMMENTS: Formerly included in Bradypodidae (see Hoffstetter, 1969; Patterson and Pascual, 1968a) or Choloepidae (see Honacki et al., 1982). Placed in Megalonychidae by Webb (1985) and Wetzel (1985a).