Vertebrata Cuvier, 1812 - vertebrates
   Gnathostomata
     Teleostomi
       Tetrapoda Hatschek & Cori 1896 [Gauthier, Kluge & Rowe 1988]
         Amniota Haeckel, 1866 [Gauthier, Kluge & Rowe 1988] - amniotes
           Class Mammalia Linnaeus, 1758 - mammals
             Subclass Theria Parker & Haswell, 1897
               Theria of Metatherian-Eutherian grade
                 Infraclass Eutheria Gill, 1872
                   Order Primates Linnaeus, 1758 - primates
                     Suborder Anthropoidea Mivart, 1864 see Parvorder Anthropoidea Mivart, 1864
                       Infraorder Catarrhini Geoffroy Saint-Hilaire, 1812 see Parvorder Catarrhini Geoffroy Saint-Hilaire, 1812
                         Superfamily Cercopithecoidea Gray, 1821
                           1 Family Cercopithecidae Gray, 1821 - Old World monkeys
                           2 Family †Oreopithecidae Schwalbe, 1915 see Subfamily Dryopithecinae Gregory & Hellman, 1939