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 Diplocheta see Superorder Helminthomorpha Pocock, 1887
                   Order Spirostreptida Brandt, 1833
                     Suborder Epinannolenidea Chamberlin, 1922
                       Family Physiostreptidae Silvestri, 1903
                         1 Genus Physiostreptus Silvestri, 1903
                         2 Genus Holopodostreptus Carl, 1913