Full reference: F. Ameghino. 1894. Enumeration synoptique des especes de mammifères fossiles des formations éocènes de Patagonie. Boletin de la Academia Nacional de Ciencias en Cordoba (Republica Argentina) 13:259-452
Parent taxon: Marsupialiformes according to G. P. Wilson et al. 2016
See also Ameghino 1894, Ameghino 1897, Forasiepi 2009, Goin et al. 2007, Goin et al. 2010, Marshall 1978 and Oliveira and Goin 2011
Sister taxa: Adelodelphys, Alphadontidae, Anchistodelphys, Arcantiodelphys, Archimetatheria, Asiatherium, Bistius, Dakotadens, Iugomortiferum, Kokopellia, Marsupialia, Pediomyoidea, Polydolopimorphia, Protalphadon, Sinbadelphys, Stagodontidae
Subtaxa: Acyonidae Amphoproviverridae Australogale Borhyaenoidea Hondadelphidae Stylocynus Thylacosmilidae