[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 Mygalomorphae Pocock, 1892 see Microorder Mygalomorpha Pocock, 1892
         Superfamily Atypoidea Thorell, 1870
           1 Family Hexurellidae Hedin & Bond, 2019
           2.1 Family Atypidae Thorell, 1870 - purse-web spiders
           2.2.1 Family Megahexuridae Hedin & Bond, 2019
           2.2.2 Family Antrodiaetidae Gertsch, 1940