WBrachiozoa
WCaenogastropoda
WCephalaspidea
WCocculinoidea
WCycloneuralia
WCyclorrhapha
WDitrysia
WEuthyneura
WHalwaxiida
WHeterobranchia
WMacrolepidoptera
WNematoida
WNeodermata
WNeogastropoda
WNeritimorpha
WPanarthropoda
WPlatyzoa
WScalidophora
WSchizophora
WTactopoda