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 Echinodermata Bruguière, 1789 - echinoderms
        Count: [f] 4c;36o;148f;291g;148s; †1f;1g
           Subphylum Asterozoa von Zittel, 1895 see Infraphylum Asterozoa von Zittel, 1895
          Count: [f] 1c;9o;50f;77g;37s
             Class Stelleroidea Lamarck, 1816 see Subphylum Asterozoa von Zittel, 1895
            Count: [f] 9o;50f;77g;37s
               Subclass Ophiuroidea Gray, 1840 - brittle stars see Class Ophiuroidea Gray, 1840
              Count: [f] 3o;17f;22g;5s
                 Order Ophiurida Müller & Troschel, 1840 sensu O'Hara et al., 2017 sensu O'Hara & al. , 2017
                Count: 11f;17g;3s
                   Suborder Gnathophiurina Matsumoto, 1915 see Order Ophiurida Müller & Troschel, 1840 sensu O'Hara et al., 2017 sensu O'Hara & al. , 2017
                  Count: [f] 4f;10g;2s
                     Family Amphiuridae Ljungman, 1867
                    Count: 2g;1s
                       Genus Amphiura Forbes, 1843
                      Count: -