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
Elysia viridis (Montagu, 1804)