Class Mammalia Linnaeus, 1758 - mammals
   Clade Yinotheria Chow & Rich 1982 [Kielan-Jaworowska, Cifelli & Luo 2004]
     Subclass Australosphenida Luo, Cifelli & Kielan-Jaworowska, 2001 see Clade Australosphenida Luo, Cifelli & Kielan-Jaworowska 2001
       1 Genus †Ambondro Flynn, Parrish, Rakotosamimanana, Simpson & Wyss, 1999 [monotypic]
       2 Genus †Asfalotomylos Kielan-Jaworowska, Cifelli & Luo, 2002, orth. inval. [monotypic] see Genus Asfaltomylos Rauhut, Martin, Ortiz-Jaureguizar & Puerta, 2002
       3 Order †Ausktribosphenida Rich,Vickers-Rich, Constantine, Flannery, Kool & van Klaveren, 1997 [monotypic]
       4 Order Monotremata Bonaparte, 1837 - monotremes