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 Flabellinidae Bergh, 1889
               Genus Flabellina McMurtrie, 1831
                 1 Flabellina pedata (Montagu, 1815)
                 2 Flabellina babai Schmekel, 1972
                 3 Flabellina ischitana Hirano & Thompson, 1990