Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Goodrich, 1930
         Amniota Haeckel, 1866 - amniotes
           Class Mammalia Linnaeus, 1758 - mammals
             Subclass Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 Infraclass Eutheria Gill, 1872
                   Order †Dinocerata Marsh, 1873
                     1 Family †Uintatheriidae Flower, 1876
                     2 Family †Gobiatheriidae Flerov, 1952 see Subfamily Gobiatheriinae Flerov, 1952