WChicxulub crater
WCretaceous–Paleogene boundary
WCretaceous–Paleogene extinction event
WAlvarez hypothesis
WBlack Peaks Formation
WBoltysh crater
WChicxulub impactor
WChota Formation
WCoalspur Formation
WCoelodus
WConiophis
WEdmonton Group
WEnchodus
WEuclastes
WEumorphocorystes
WFerris Formation
WFort Union Formation
WGosau Group
WGuaduas Formation
WHoploparia
WJagüel Formation
WLapurr Sandstone
WLefipán Formation
WLopez de Bertodano Formation
WMaastricht Formation
WMadtsoia
WMadtsoiidae
WNorth Horn Formation
WPalaeophiidae
WPotrerillos Formation, Mexico
WPrince Creek Formation
WRoca Formation, Argentina
WSan Francisquito Formation
WScollard Formation
WShiva crater
WSilverpit crater
WTanis (fossil site)
WThoracosaurus
WTimeline of Cretaceous–Paleogene extinction event research
WTrigonia
WWillow Creek Formation
WYacoraite Formation