Class Mammalia Linnaeus, 1758 - mammals
Subclass Acrotheria Averianov & Lopatin, 2011
Infraclass Zatheria McKenna, 1975
see Clade Zatheria McKenna 1975
Superlegion "Prototheria" Gill, 1872 [paraphyletic]
see Subclass Prototheria Gill, 1872
Legion Australosphenida Luo, Cifelli & Kielan-Jaworowska, 2001
see Clade Australosphenida Luo, Cifelli & Kielan-Jaworowska 2001
Order †Ausktribosphenida Rich,Vickers-Rich, Constantine, Flannery, Kool & van Klaveren, 1997 [monotypic]
Family †Ausktribosphenidae Rich, Vickers-Rich, Constantine, Flannery, Kool & van Klaveren, 1997
Genus †Ausktribosphenus orth. inval.
see Genus Ausktribosphenos Rich, Vickers-Rich, Constantine, Flannery, Kool & van Klaveren, 1997