Gastropoda Cuvier, 1795
see Class Gastropoda Cuvier, 1795
Nudipleura Wägele & Willan, 2000
Nudibranchia Cuvier, 1814
see Order Nudibranchia Cuvier, 1814
Dexiarchia Schrödl, Wägele & Willan, 2001
Cladobranchia Willan & Morton, 1984
Aeolidoidea d'Orbigny, 1834
see Superfamily Aeolidioidea Gray, 1827
Family Facelinidae Bergh, 1889
Genus Cratena Bergh, 1864
1 Cratena peregrina (Gmelin, 1791)