Chelicerata Heymons, 1901
   Amblypygi Thorell, 1883 - whip spiders
     Suborder Euamblypygi Weygoldt, 1996
       Infraorder Neoamblypygi Weygoldt, 1996
         Unidistitarsata Engel & Grimaldi, 2014
           Superfamily Phrynoidea Blanchard, 1852
             Family Phrynidae Blanchard, 1852
               1 Genus †Britopygus Dunlop & Martill, 2002
               2 Genus Phrynus Lamarck, 1801