Alternative spelling: Hegetotheridae
Full reference: F. Ameghino. 1894. Enumeration Synoptique des especes de mammiferes fossiles des formations Eocenes de Patagonie. Boletin de la Academia Nacional de Ciencias en Cordoba (Republica Argentina) 13:259-452
Parent taxon: Notoungulata according to D. A. Croft and F. Anaya 2006
Sister taxa: Acamana, Albertogaudryidae, Archaeoryctes, Brandmayria, Entelonychia, Hegetotheria, Homalodotheria, Interatheriidae, Leontiniidae, Mesotheriidae, Notioprogonia, Perutheriidae, Sparnotheriodontidae, Toxodontia, Toxodontidae, Typotheria, Typotheroidea
Subtaxa: Ethegotherium, Hegetotheriinae, Hemihegetotherium, Pachyrucos, Pachyrukhinae, Paedsotherium, Prohegetotherium, Propachyrucos, Prosotherium, Pseudohegetotherium, Sallatherium, Selatherium
Ecology: scansorial herbivore