[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       [Order] Solifugae Sundevall, 1833
         Genus †Protosolpuga Petrunkevitch, 1913, incertae sedis