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