Didelphimorphia Gill 1872

Families: 1 family with 17 genera and 87 species:

Family Didelphidae Gray 1821 (17 genera with 87 species and 65 subspecies)

Discussion: Traditionally included in Marsupialia; included in Ameridelphia (see Aplin and Archer, 1987; Marshall et al., 1990; and Szalay, 1982); but not Microbiotheriidae (Marshall et al., 1990; contra Reig et al., 1987).