Mammalia Linnaeus 1758 [Rowe 2020] see Class Mammalia Linnaeus, 1758
   Theria Parker & Haswell 1897 [McKenna 1975] see Subclass Theria Parker & Haswell, 1897
     Eutheria Gill 1872 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Infraclass Eutheria Gill, 1872
       Genus †Maelestes Wible, Rougier, Novacek & Asher, 2007