Phylum Mollusca Linnaeus, 1758 - molluscs
   Class Gastropoda Cuvier, 1795 - snails and slugs
     Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
       Order Sacoglossa Ihering, 1876 - sacoglossans
         Suborder Tamanovalvina
           Superfamily Julioidea see Superfamily Oxynooidea Stoliczka, 1868 (1847)
             01 Family Cylindrobullidae Thiele, 1931 [monotypic]
             02 Family Volvatellidae Pilsbry, 1895
             03 Family Juliidae Smith, 1885
             04 Family Oxynoidae Stoliczka, 1868 (1847)
             05 Family Gascoignellidae Jensen, 1985 [monotypic] see Family Platyhedylidae Salvini-Plawen, 1973
             06 Family Polybranchiidae O'Donoghue, 1929 see Family Caliphyllidae Tiberi, 1881
             07 Family Costasiellidae Clark, 1984 [monotypic] see Family Limapontiidae Gray, 1847
             08 Family Stiligeridae Iredale & O'Donoghue, 1923 see Family Limapontiidae Gray, 1847
             09 Family Elysiidae Forbes & Hanley, 1851 see Family Placobranchidae Gray, 1840, orth. inval.
             10 Family Bosellidae American Malacological Union, 1985, orth. inval. [monotypic] see Family Boselliidae Marcus, 1982
             11 Family Platyhedylidae Salvini-Plawen, 1973 [monotypic]