Mollusca Linnaeus, 1758 - molluscs see Phylum Mollusca Linnaeus, 1758
   Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
     Clade Heterobranchia Burmeister, 1837 see Superorder Heterobranchia Burmeister, 1837
       Informal Group Opisthobranchia Milne-Edwards, 1846 see Order Opisthobranchia Milne-Edwards, 1848
         Clade Sacoglossa Ihering, 1876 see Order Sacoglossa Ihering, 1876
           Subclade Oxynoacea Odhner, 1939 see Suborder Oxynoacea Odhner, 1939
             Superfamily Oxynooidea Stoliczka, 1868 (1847)
               1 Family Oxynoidae Stoliczka, 1868 (1847)
               2 Family Juliidae Smith, 1885
               3 Family Volvatellidae Pilsbry, 1895