Clade Mammalia Linnaeus 1758 [Rowe 1988], nom. cl. inval. see Class Mammalia Linnaeus, 1758
   Clade Trechnotheria McKenna 1975
     Clade Alethinotheria Averianov, Martin & Lopatin 2013
       Clade Cladotheria McKenna 1975
         Clade †Dryolestida Prothero 1981 see Order Dryolestida Prothero, 1981
           Family †Dryolestidae Marsh, 1879
             Subfamily †Dryolestinae Marsh, 1879
               Genus †Amblotherium Owen, 1871
                 1 †Amblotherium gracile (Marsh, 1879)
                 2 †Amblotherium pusillumᵀ (Owen, 1866)