Clade Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Clade Trechnotheria McKenna 1975
     Clade Alethinotheria Averianov, Martin & Lopatin 2013
       1.1 Family †Spalacotheriidae Marsh, 1887
       1.2 Clade †Meridiolestida Rougier, Apesteguía & Gaetano 2011 see Order Meridiolestida Rougier, Apesteguía & Gaetano, 2011
       2 Clade Cladotheria McKenna 1975