WAltacreodus
WAsiatheriidae
WAsioryctitheria
WCorriebaatar
WCrusafontia
WDeltatheridiidae
WDeltatheridium
WDjadochtatherioidea
WDryolestidae
WEodelphis
WHakusanobaatar
WHerpetotheriidae
WJeholodens
WJeholodentidae
WKamptobaatar
WKennalestes
WKogaionon (mammal)
WLaolestes
WLiaoconodon
WPaulchoffatia
WPeramus
WPhascolestes
WPlagiaulax
WSinodelphys
WSpalacotheriidae
WSunnyodon
WUnnuakomys
WVincelestes
WVintana
WYaverlestes
WZalambdalestes
WZhangheotheriidae