†suborder Lopholipterna Cifelli 1983 (placental)
Full reference: R. Cifelli. 1983. The origin and affinities of the South American Condylarthra and early Tertiary Litopterna (Mammalia). American Museum Novitates 2772:1-49
Parent taxon: Litopterna according to R. Cifelli 1983
Sister taxa: Adianthidae, Eolicaphrium, Eolitopterna, Lambdaconus elegans, Macraucheniidae, Mesorhinidae, Notonychopidae, Paulogervaisia celata, Proacrodon, Proacrodon transformatus, Proadiantus gibbus, Proterotheriidae, Protolipternidae, Sparnotheriodontidae, Thoatheriopsis
Subtaxa: Macrauchenioidea Proterotherioidea
Ecology: scansorial herbivore