†order Notoungulata Roth 1903 (notoungulate)
Full reference: S. Roth. 1903. Los Ungulados Sudamericanos. Anales del Museo de La Plata (Sección Paleontológica) 5:1-36
Parent taxon: Meridiungulata according to M. C. McKenna 1975
Sister taxa: Astrapotheria, Litopterna, Pyrotheria, Trigonostylopoidea, Xenungulata
Subtaxa: Acamana, Albertogaudryidae, Archaeoryctes, Brandmayria, Entelonychia, Hegetotheria, Hegetotheriidae, Homalodotheria, Interatheriidae, Leontiniidae, Mesotheriidae, Notioprogonia, Perutheriidae, Sparnotheriodontidae, Toxodontia, Toxodontidae, Typotheria, Typotheroidea
Ecology: scansorial herbivore