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
                   Superfamily Araneoidea Clerck, 1757
                     Family Theridiidae Sundevall, 1833 - cobweb and widow spiders
                       Genus †Cretotheridion Wunderlich, 2015