Parent taxon: Marsupialiformes according to G. P. Wilson et al. 2016
See also Davis 2007
Sister taxa: Adelodelphys, Alphadontidae, Anchistodelphys, Arcantiodelphys, Archimetatheria, Asiatherium, Bistius, Dakotadens, Iugomortiferum, Kokopellia, Marsupialia, Polydolopimorphia, Protalphadon, Sinbadelphys, Sparassodonta, Stagodontidae
Subtaxa: Apistodon Aquiladelphidae Pediomyidae
Ecology: scansorial omnivore
Distribution:
• Eocene of Brazil (1 collection)
• Paleocene to Eocene of Peru (1)
• Paleocene of United States (1: Montana)
• Cretaceous of Canada (25: Alberta, Saskatchewan), China (1), Mexico (2), Portugal (1), United States (99: Alaska, Colorado, Montana, New Mexico, North Dakota, South Dakota, Utah, Wyoming)
Total: 131 collections including 226 occurrences