Clade Didelphia Cope 1889 (marsupial)
Full reference: E. D. Cope. 1889. Synopsis of the families of Vertebrata. The American Naturalist 23:1-29
Parent taxon: Marsupialia according to M. C. McKenna and S. K. Bell 1997
Sister taxa: Adinodon, Ameridelphia, Archimetatheria, Australidelphia, Bistius, Didelphimorphia, Diprotodonta, Djarthia, Duquettichnus, Gashternia, Groeberiidae, Hatcheritherium, Ideodelphys, Kokopellia, Marsupicarnivora, Nototheriidae, Numbigilgidae, Palangania, Perameloidea, Perrodelphys, Polydolopimorphia, Progarzonia, Vombatoidea, Xenodelphis
Subtaxa: none
Ecology: scansorial omnivore