Class [Mammalia] Linnaeus, 1758 - mammals
   Order Primates Linnaeus, 1758 - primates
     Suborder Prosimii Illiger, 1811 see Infraorder Strepsirrhini "Geoffroy Saint-Hilaire, 1812"
       Infraorder Tarsiiformes Gregory, 1915
         Superfamily †Omomyoidea Trouessart, 1879
           Family †Omomyidae Trouessart, 1879
             Subfamily †Omomyinae Trouessart, 1879
               Tribe †Omomyinae orth. inval. see Tribe Omomyini Trouessart, 1879
                 1 Genus †Chumashius Stock, 1933
                 2 Genus †Omomys Leidy, 1869
                 3 Genus †Steinius Bown & Rose, 1984