[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] †Trigonotarbida Petrunkevitch, 1949
           Family †Anthracosironidae Pocock, 1903
             1 Genus †Anthracosiro Pocock, 1903
             2 Genus †Arianrhoda Dunlop & Selden, 2004
             3 Genus †Vratislavia Fritsch, 1904