WAcynodon
WAdriosaurus
WAerotitan
WAhshislepelta
WAigialosaurus
WAnatosuchus
WArenysaurus
WAristonectinae
WAthabascasaurus
WBagaraatan
WBaotianmansaurus
WBauruemys
WCetarthrosaurus
WDalinghosaurus
WDinilysia
WGilmoreteius
WManchurochelys
WNanhsiungchelyidae
WPachyrhachis
WPhilydrosaurus
WShokawa
WSineoamphisbaena
WTchoiria