Chelicerata Heymons, 1901 see Superclass Chelicerata Heymons, 1901
   Euchelicerata Weygoldt & Paulus, 1979
     [Class] Arachnida Lamarck, 1801
       Pantetrapulmonata Shultz, 2007
         [Order] Schizomida Petrunkevitch, 1945 - schizomids