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
Anthobranchia Minichev, 1970
Hypselodoris orsinii (Vérany, 1846)