[Subphylum] [Chelicerata] Heymons, 1901
   [Order] Araneae Clerck, 1757 - spiders see Suborder Araneae Clerck, 1757
     Suborder Opisthothelae Pocock, 1892 - modern spiders see Infraorder Opisthothelae Pocock, 1892
       Infraorder Araneomorphae Smith, 1902 see [unranked] Araneomorphae Smith, 1902
         Superfamily Palpimanoidea Thorell, 1869
           1 Family Palpimanidae Thorell, 1869, nom. praeval.
           2.1 Family Archaeidae Koch & Berendt, 1854 - assassin spiders
           2.2.1.1 Family Stenochilidae Thorell, 1873
           2.2.1.2 Family Huttoniidae Simon, 1893
           2.2.2 Family Mecysmaucheniidae Simon, 1895