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 Primates Linnaeus, 1758 - primates
                     Suborder Prosimii Illiger, 1811 see Infraorder Strepsirrhini "Geoffroy Saint-Hilaire, 1812"
                       1 Infraorder †Adapiformes Hoffstetter, 1977 [monotypic]
                       2 Infraorder Lemuriformes Gregory, 1915
                       3 Infraorder Tarsiiformes Gregory, 1915