Gastropoda Cuvier, 1795 see Class Gastropoda Cuvier, 1795
   Orthogastropoda Ponder & Lindberg, 1995 see Subclass Orthogastropoda Ponder & Lindberg, 1995
     Apogastropoda Salvini-Plawen & Haszprunar, 1987
       Heterobranchia Burmeister, 1837 see Superorder Heterobranchia Burmeister, 1837
         Euthyneura Spengel, 1881
           Nudibranchia Cuvier, 1814 see Order Nudibranchia Cuvier, 1814
             Eleutherobranchia
               1 Cladobranchia Willan & Morton, 1984
               2 Berthella sideralis (Lovén, 1846)