WArchaeobatrachia
WMesobatrachia
WNeobatrachia
WAlsodidae
WAmphignathodontidae
WAromobatidae
WArthroleptidae
WTailed frog
WBatrachylidae
WBombinatoridae
WBrevicipitidae
WTrue toad
WCalyptocephalellidae
WCeratophryidae
WConraua
WCraugastoridae
WGhost frog
WGlass frog
WHemiphractidae
WHylidae
WHylodidae
WHyloidea
WLeptodactylidae
WLimnodynastidae
WMantellidae
WMegophryidae
WMyobatrachidae
WOdontophrynidae
WPelobatoidea
WPelodryadidae
WPipidae
WPipoidea
WPoison dart frog
WPyxicephalinae
WRanoidea
WRhinoderma
WRhinodermatidae
WRhinophrynidae
WSaddleback toad
WAmerican spadefoot toad
WShovelnose frog
WSooglossidae
WTailed frog
WTrue toad
WTukeit Hill frog