[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
Status: extant
   Eukaryotes see Domain Eukaryota Chatton, 1925
  Status: extant
     Metazoa Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
    Status: extant
       Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
      Status: extant
         Deuterostomia Grobben, 1908 - deuterostomes see Infrakingdom Deuterostomia Grobben, 1908
        Status: extant
           Phylum Chordata Bateson, 1885 - chordates
          Status: extant
             Subphylum Vertebrata Cuvier, 1812 - vertebrates
            Status: extant
               Class "Agnatha" Cope, 1889
              Status: extant
                 Subclass †Pteraspidomorphi Goodrich, 1909 see Class Pteraspidomorphi Goodrich, 1909
                Status: fossil
                   Order †Astraspida (Berg, 1940) see Subclass Astraspida (Berg, 1940)
                  Status: fossil