WAthabascasaurus
WBarracudasauroides
WBesanosaurus
WCalifornosaurus
WCaypullisaurus
WCetarthrosaurus
WContectopalatus
WCryopterygius
WCymbospondylidae
WGuanlingsaurus
WHimalayasaurus
WHudsonelpidia
WLeptonectes
WLeptonectidae
WMacropterygius
WMalawania
WMerriamosauria
WMixosauria
WOmphalosauridae
WOphthalmosaurinae
WParvipelvia
WPhalarodon
WPlatypterygiinae
WQianichthyosaurus
WShastasauridae
WShonisauridae
WThaisaurus
WThunnosauria
WWahlisaurus