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 †Plesiadapiformes Simons & Tattersall, 1972
                       Superfamily †Paramomyoidea see Superfamily Paromomyoidea Simpson, 1940
                         1 Family †Paromomyidae Simpson, 1940
                         2 Family †Picrodontidae Simpson, 1937
                         3 ?Family †Microsyopidae Osborn, 1892