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 †Sivaladapidae Thomas & Verma, 1979
           Subfamily †Hoanghoniinae Gingerich et al., 1994
             Genus †Rencunius Gingerich, Holroyd & Ciochon, 1994