Tetrapulmonata Shultz, 1990
   Superorder Serikodiastida Garwood & Dunlop, 2014
     Order Araneida Clerck, 1757 - spiders
       Suborder Araneae Clerck, 1757 - tailless spiders
         Infraorder Opisthothelae Pocock, 1892 - unsegmented spiders
           Microorder Araneomorpha Smith, 1902 - araneomorphs
             Clade Neocribellatae Caporiacco
               Praeentelegynae Wunderlich, 2019
                 Branch Dipneumonomorpha
                   RTA-clade
                     Family Thomisidae Sundevall, 1833 - crab spiders