Bibymalagasia An order of mammals described in 1994 by R. E. MacPhee, based on the enigmatic genus (see ENIGMATIC TAXON) Plesiorycteropus, known from sub-Recent fossil material from Madagascar. The order is distinguished by having large, perforating, transarcual canals in the neural arches of the lumbar, posterior thoracic, and anterior sacral vertebrae; a posteromedial process on the astralagus, with a ventral groove for flexor tendons; and large ischial expansions (see ISCHIUM). Plesiorycteropus was formerly assigned to the order Tubulidentata.

Bibymalagasia An order of mammals described in 1994 by R. D. E. MacPhee, based on the enigmatic genus (see ENIGMATIC TAXON) Plesiorycteropus, known from sub-Recent fossil material from Madagascar. The order is distinguished by having large, perforating, transarcual canals in the neural arches of the lumbar, posterior thoracic, and anterior sacral vertebrae (see VERTEBRA); a posteriomedial process on the astragalus, with a ventral groove for flexor tendons; and large ischial expansions (see ISCHIUM). Plesioryctero-pus was formerly assigned to the order Tubulidentata.