Class [Mammalia] Linnaeus, 1758 - mammals
   Order Primates Linnaeus, 1758 - primates
     Suborder Prosimii Illiger, 1811 see Infraorder Strepsirrhini "Geoffroy Saint-Hilaire, 1812"
       Infraorder Lemuriformes Gregory, 1915
         Superfamily †Adapoidea Trouessart, 1879 see Infraorder Adapiformes Hoffstetter, 1977
           Family †Notharctidae Trouessart, 1879
             Subfamily †Cercamoniinae Gingerich, 1975
               Genus †Periconodon Stehlin, 1916