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 Sabellida Fauchald, 1977
               1 Family Sabellidae Malmgren, 1867
               2 Family Caobangidae M.L. Jones, 1974 see Family Sabellidae Malmgren, 1867
               3 Family Serpulidae Savigny, 1818
               4 Family Spirorbidae (Chamberlin, 1919) Pillai, 1970