Chelicerata Heymons, 1901
   Amblypygi Thorell, 1883 - whip spiders
     Suborder Euamblypygi Weygoldt, 1996
       Infraorder Neoamblypygi Weygoldt, 1996
         Unidistitarsata Engel & Grimaldi, 2014
           Superfamily Phrynoidea Blanchard, 1852
             1 Family Phrynichidae Simon, 1892
             2 Family Phrynidae Blanchard, 1852