[Subphylum] [Chelicerata] Heymons, 1901
   [Order] Araneae Clerck, 1757 - spiders see Suborder Araneae Clerck, 1757
     1 Suborder Mesothelae Pocock, 1892 - segmented spiders see Infraorder Mesothelae Pocock, 1892
     2 Suborder Opisthothelae Pocock, 1892 - modern spiders see Infraorder Opisthothelae Pocock, 1892