outgroup
Thaisaurus
Petrolacosaurus
Araeoscelis
Hovasaurus
Thadeosaurus
Hupesuchus
Claudiosaurus
Utatsusaurus
Parvinatator
Quasianosteosaurus
Xinminosaurus
Wimanius
Mixosaurus_maotaiensis
Mixosaurus_panxianensis
Mixosaurus_cornalianus
Mixosaurus_kuhnschnyderi
Contectopalatus_atavus
Phalarodon_callawayi
Phalarodon_fraasi
Phalarodon_major
Toretocnemus
Qianichthyosaurus
Cymbospondylus_petrinus
Phantomosaurus
Cymbospondylus_buchseri
Merriamosaurus
Besanosaurus
Callawayia
Mikadocephalus_gracilirostris
Shonisaurus
Shastasaurus
Guizhouichthyosaurus
Californosaurus
Macgowania
Hudsonelpidia
Temnodontosaurus_platyodon
Temnodontosaurus_burgundiae
Suevoleviathan
Platypterygius
Leptonectes
Eurhinosaurus
Excalibosaurus
Ichthyosaurus
Stenopterygius
OPTHALMOSAURIA
Grippia_longirostris
Chaohusaurus