[Subphylum] [Chelicerata] Heymons, 1901
   [Order] Araneae Clerck, 1757 - spiders see Suborder Araneae Clerck, 1757
     Suborder Mesothelae Pocock, 1892 - segmented spiders see Infraorder Mesothelae Pocock, 1892
       1 Family Liphistiidae Thorell, 1869
       2 Family Heptathelidae see Family Liphistiidae Thorell, 1869