Mammaliaformes Rowe 1988, nom. cl. inval. see Clade Mammaliaformes Rowe 1988 [Rowe 2020]
   [crown] Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Clade Mammalia Linnaeus 1758 [Rowe 2020]
     Theriimorpha Rowe 1993
       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
           1.1 †Maelestes gobiensis Wible et al., 2007
           1.2.1.1[9] †Kulbeckia kulbecke Nessov, 1993
           1.2.1.2 †Zalambdalestes lechei Gregory & Simpson, 1926
           1.2.2.1[10] †Uchkudukodon nessovi (McKenna et al., 2000)
           1.2.2.2 †Ukhaatherium nessovi Novacek et al., 1997
           2[E] Placentalia Owen 1837 [O'Leary, Allard, Novacek, Meng & Gatesy 2004] see Cohort Placentalia Owen, 1837