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 Annelida Lamarck, 1809 - segmented worms
           Class Polychaeta Grube, 1850 - polychaetes
             Order Terebellida Rouse & Fauchald, 1977
               Family Amphictenidae Grube, 1850, nom. illeg. see Family Pectinariidae de Quatrefages, 1865
                 1 Genus Cistena Leach, 1816 see Genus Pectinaria Lamarck, 1818
                 2 Genus Petta Malmgren, 1865
                 3 Genus Amphictene Lamarck, 1818 see Subgenus Amphictene Lamarck, 1818