Class Mammalia Linnaeus, 1758 - mammals
Subclass Boreosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 - tribotherians
see Clade Boreosphenida Luo, Cifelli & Kielan-Jaworowska 2001
Infraclass Metatheria Huxley, 1880
Cohort Marsupialia Jameson, 1818 - marsupials
Superorder "Ameridelphia" Szalay, 1982 [paraphyletic]
see Clade Ameridelphia Szalay 1982
Order "Didelphimorphia" Gill, 1872 [paraphyletic]
Family †"Pediomyidae" Simpson, 1927 [monophyletic?]
Genus †Iqualadelphis Fox, 1987, sedis mutabilis [monotypic]
1 †Iqualadelphis lactea Fox, 1987