Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Hexapoda Latreille, 1825 see Epiclass Hexapoda Latreille, 1825
       Class Collembola Lubbock, 1870
         Order Poduromorpha Börner, 1913
           Superfamily Hypogastruroidea Börner, 1906
             1 Family Hypogastruridae Börner, 1906
             2 Family Pachytullbergiidae Stach, 1954