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 Arthropoda Siebold, 1848 - arthropods
           Subphylum Uniramia Snodgrass, 1935 see Phylum Arthropoda Siebold, 1848
             Class Diplopoda Blainville, 1844 - millipedes
               Subclass Helminthomorpha 1958 see Superorder Helminthomorpha Pocock, 1887
                 Superorder Anocheta see Order Spirobolida Cook, 1895
                   Order Spirobolida Cook, 1895
                     Suborder Spirobolidea Cook, 1895
                       1 Family Spirobolidae Bollman, 1893
                       2 Family Floridobolidae W.T. Keeton, 1959
                       3 Family Allopocockiidae W.T. Keeton, 1960
                       4 Family Messicobolidae Loomis, 1968
                       5 Family Atopetholidae Chamberlin, 1918
                       6 Family Spirobolellidae Brölemann, 1913
                       7 Family Typhlobolellidae (R.L. Hoffman, 1969)
                       8 Family Rhinocrocidae see Family Rhinocricidae Brölemann, 1913
                       9 Family Pseudospirobolellidae Brölemann, 1913