living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Mollusca Linnaeus, 1758 - molluscs
           Class Gastropoda Cuvier, 1795 - snails and slugs
             Subclass Opisthobranchia Milne-Edwards, 1848 - opisthobranchs see Order Opisthobranchia Milne-Edwards, 1848
               Order Nudibranchia Cuvier, 1814 - "true" nudibranchs
                 Suborder Doridoidea Rafinesque, 1815 see Suborder Doridina Odhner, 1934
                   Superfamily Eudoridacea Boss, 1982, nom. inval., orth. inval. see Superfamily Eudoridoidea Vaught, 1989, nom. inval.
                     Family Discodorididae Bergh, 1891
                       Subfamily Discodoridinae Bergh, 1891 see Family Discodorididae Bergh, 1891
                         Genus Thordisa Bergh, 1877
                         Genus Nirva Bergh, 1905
                         Genus Fracassa Bergh, 1878
                         Genus Anisodoris Bergh, 1898
                         Genus Diaulula Bergh, 1878
                         Genus Phialodoris Bergh, 1890
                         Genus Tayuva Marcus & Marcus, 1967
                         Genus Peltodoris Bergh, 1880 see Genus Discodoris Bergh, 1877
                         Genus Carryodoris Vayssière, 1919
                         Genus Discodoris Bergh, 1877