Order Primates Linnaeus, 1758 - primates
   Semiorder Strepsirrhini see Suborder Strepsirrhini Geoffroy Saint-Hilaire, 1812
     Suborder †Adapiformes Hoffstetter, 1977 [monotypic] see Infraorder Adapiformes Hoffstetter, 1977
       Superfamily †Adapoidea Trouessart, 1879 see Infraorder Adapiformes Hoffstetter, 1977
         Family †Notharctidae Trouessart, 1879
           1 Genus †Cantius Simons, 1962
           2 Genus †Copelemur Gingerich & Simons, 1977
           3 Genus †Notharctus Leidy, 1870
           4 Genus †Pelycodus Cope, 1875
           5 Genus †Smilodectes Wortman, 1903
           6 Genus †Hesperolemur Gunnell, 1995