Order Primates Linnaeus, 1758 - primates
   Semiorder Euprimates Hoffstetter, 1978 see Clade Euprimates
     Suborder Haplorhini Pocock, 1918
       Hyporder Tarsiiformes Gregory, 1915 see Infraorder Tarsiiformes Gregory, 1915
         Superfamily †Omomyoidea Trouessart, 1879 [monotypic]
           Family †Omomyidae Trouessart, 1879
             Subfamily †Omomyinae Trouessart, 1879
               Tribe †Washakiini Szalay, 1976
                 Subtribe †Hemiacodontina Szalay, 2000
                   Genus †Hemiacodon Marsh, 1872