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 Cephalaspidea Fischer, 1883
                 Family Acteonidae d'Orbigny, 1843, nom. protect. - bubble shells
                   01 Genus Actaeon orth. inval. see Genus Acteon Montfort, 1810
                   03 Genus Acteon Montfort, 1810
                   04 Genus Neactaeonina Thiele, 1912
                   05 Genus Rictaxis Dall, 1871
                   06 Genus Lissacteon Monterosato, 1890
                   07 Genus Solidula Fischer von Waldheim, 1807 see Subgenus Solidula Fischer von Waldheim, 1807
                   08 Genus Pseudacteon Grassé (ed.), 1968, orth. inval. see Genus Pseudactaeon J. Thiele, 1925
                   09 Genus Alexiana
                   10 Genus Microglyphis Dall, 1902