[Phylum] [Arthropoda] Siebold, 1848 - arthropods
   Chelicerata Heymons, 1901
     Euchelicerata Weygoldt & Paulus, 1979
       Pantetrapulmonata Shultz, 2007
         [Order] †Trigonotarbida Petrunkevitch, 1949
           Family †Palaeocharinidae Hirst, 1923
             1 Genus †Aculeatarbus Shear, Selden & Rolfe, 1987
             2 Genus †Gelasinotarbus Shear, Selden & Rolfe, 1987
             3 Genus †Gigantocharinus Shear, 2000
             4 Genus †Gilboarachne Shear, Selden & Rolfe, 1987
             5 Genus †Palaeocharinus Hirst, 1923
             6 Genus †Spinocharinus Poschmann & Dunlop, 2011