living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Count: 4k;54p;156c;911o;7123f;17,575g;4762s;36ss;8v;19; ‡1f;6g;7s;1ss; †1c;10o;10f;19g;1s
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
  Count: [c] 2k;51p;154c;900o;7001f;17,209g;4300s;33ss;8v; ‡1f;6g;7s;1ss; †1c;10o;10f;19g;1s
     Kingdom Animalia Linnaeus, 1758 - animals
    Count: [c] 38p;101c;595o;5766f;13,419g;3233s;32ss;3v; ‡1f;6g;7s;1ss; †1c;9o;10f;16g;1s
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
      Count: [c] 29p;70c;458o;5094f;11,476g;2933s;31ss;3v; ‡1f;6g;7s;1ss; †1c;8o;10f;11g;1s
         Phylum Annelida Lamarck, 1809 - segmented worms
        Count: [f] 4c;31o;128f;416g;122s
           Class Polychaeta Grube, 1850 - polychaetes
          Count: [f] 25o;87f;305g;88s
             Order Phyllodocida Dales, 1962
            Count: [f] 27f;118g;34s
               Superfamily Aphroditacea Malmgren, 1867 see Superfamily Aphroditoidea Malmgren, 1867
              Count: [f] 6f;32g;5s
                 Family Sigalionidae Kinberg, 1856
                Count: 6g
                   1 Genus Psammolyce Kinberg, 1855
                  Count: -
                   2 Genus Sigalion Audouin & Milne Edwards, in Cuvier, 1830
                  Count: -
                   3 Genus Sthenelais Kinberg, 1855
                  Count: -
                   4 Genus Neoleanira Pettibone, 1970
                  Count: -
                   5 Genus Willeysthenelais Pettibone, 1971
                  Count: -
                   6 Genus Sthenelanella Moore, 1910
                  Count: -