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
           Sacoglossa Ihering, 1876 see Order Sacoglossa Ihering, 1876
             1 Elysia viridis (Montagu, 1804)
             2 Placida dendritica (Alder & Hancock, 1843)