WAdinotherium
WAngostura Formation, Ecuador
WDiadiaphorus
WEionaletherium
WGryposuchus
WHapalops
WHoffstetterius
WLetrero Formation
WLycopsis
WMourasuchus
WPelagornis
WPisco Formation
WPiscobalaena
WProtypotherium
WPsilopterus
WPurussaurus
WThylamys
WToxodon
WTrigodon
WUrumaco
WXenastrapotherium