(Petrolacosaurus,((Claudiosaurus,Thadeosaurus),(Hovasaurus,(Wumengosaurus,((Nanchangosaurus,(Eohupehsuchus,(Hupehsuchus,(Parahupehsuchus,Eretmorhipis)))),((Sclerocormus,Cartorhynchus),(Chaohusaurus_geishanensis,Chaohusaurus_chaoxianensis,Chaohusaurus_zhangjiawanensis,(Utatsusaurus,Parvinatator,(Grippia,Gulosaurus),((Mixosaurus_panxianensis,Mixosaurus_cornalianus,Mixosaurus_kuhnschnyderi,(Phalarodon_atavus,(Phalarodon_fraasi,Phalarodon_callawayi))),(Cymbospondylus_piscosus,Cymbospondylus_buchseri,Cymbospondylus_nichollsi,Xinminosaurus,Thalattoarchon),((Besanosaurus,(Guizhouichthyosaurus,Callawayia_wolonggangensis,(Shastasaurus,(Guanlingsaurus,(Shonisaurus_popularis,Shonisaurus_sikanniensis))))),(Californosaurus,(Callawayia_neoscapularis,((Toretocnemus,(Qianichthyosaurus_zhoui,Qianichthyosaurus_xingyiensis)),(Hudsonelpidia,Macgowania,Suevoleviathan,Temnodontosaurus,Leptonectes_tenuirostris,Leptonectes_moorei,Leptonectes_solei,Malawania,Chacaicosaurus,Hauffiopteryx,(Excalibosaurus,Eurhinosaurus),(Ichthyosaurus,(Stenopterygius,(Aegirosaurus,Acamptonectes,Maiaspondylus,Arthropterygius,Athabascasaurus,Sveltonectes,Brachypterygius,Caypullisaurus,Mollesaurus,Leninia,Platypterygius_australis,Platypterygius_americanus,Cryopterygius,Ophthalmosaurus_icenicus,Ophthalmosaurus_natans,Palvennia,Sisteronia)))))))))))))))));