Order Primates Linnaeus, 1758 - primates
   Semiorder Euprimates Hoffstetter, 1978 see Clade Euprimates
     Suborder Strepsirhini see Suborder Strepsirrhini Geoffroy Saint-Hilaire, 1812
       Infraorder †Adapiformes Hoffstetter, 1977
         Family †Notharctidae Trouessart, 1879
           Subfamily †Protoadapinae Szalay & Delson, 1979 see Tribe Protoadapini Szalay & Delson, 1979
             1 Tribe †Protoadapini Szalay & Delson, 1979
             2 Tribe †Pelycodontini Schwartz, 1986 see Tribe Notharctini Trouessart, 1879