[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 Avicularioidea Simon, 1874
           1 Family Microhexuridae Bond, Opatova & Hedin, 2020
           2.1.1 Family Euagridae Raven, 1979
           2.1.2.1.1 Euagrus chisoeus Kulkarni, Wood, Lloyd & Hormiga, 2020, orth. inval. see Euagrus chisoseus Gertsch, 1939
           2.1.2.1.2 Family Ischnothelidae Pickard-Cambridge, 1897
           2.1.2.2 Family Hexathelidae Simon, 1892
           2.2.1 Family Porrhothelidae Hedin & Bond, 2018
           2.2.2.1 Family Macrothelidae Simon, 1892
           2.2.2.2.1.1 Family Stasimopidae Bond, Opatova & Hedin, 2020
           2.2.2.2.1.2 Family Migidae Simon, 1889
           2.2.2.2.2.1.1 Family Bemmeridae Simon, 1903
           2.2.2.2.2.1.2.1 Family Barychelidae Simon, 1889
           2.2.2.2.2.1.2.2 Family Theraphosidae Thorell, 1869 - tarantulas and bird spiders
           2.2.2.2.2.2.1.1 Family Paratropidae see Family Paratropididae Simon, 1889, nom. praeval.
           2.2.2.2.2.2.1.2.1 Family Halonoproctidae Pocock, 1901
           2.2.2.2.2.2.1.2.2.1 Family Euctenizidae Raven, 1985
           2.2.2.2.2.2.1.2.2.2 Family Idiopidae Simon, 1889
           2.2.2.2.2.2.2.1.1 Family Cyrtaucheniidae Simon, 1889
           2.2.2.2.2.2.2.1.2.1 Family Actinopodidae Simon, 1892
           2.2.2.2.2.2.2.1.2.2 Family Atracidae Hogg, 1901
           2.2.2.2.2.2.2.2.1.1 Family Anamidae Simon, 1889
           2.2.2.2.2.2.2.2.1.2 Family Nemesiidae Simon, 1889
           2.2.2.2.2.2.2.2.2.1.1 Family Rhytidicolidae Simon, 1903
           2.2.2.2.2.2.2.2.2.1.2 Family Microstigmatidae Roewer, 1942
           2.2.2.2.2.2.2.2.2.2.1 Family Dipluridae Simon, 1889 - funnel-web spiders
           2.2.2.2.2.2.2.2.2.2.2 Family Pycnothelidae Chamberlin, 1917