WAbanico Formation
WAcrophoca
WAdinotherium
WAncud Volcanic Complex
WArchaeogeryon
WAstrapotherium
WAucanquilcha
WAyacara Formation
WBorhyaena
WBrachydelphis
WCalappilia
WCaleta Godoy Formation
WCaleta Herradura Formation
WCladosictis
WCoquimbo Formation
WCura-Mallín Group
WCuvieronius
WEocardia
WFarellones Formation
WList of gomphothere fossils in South America
WHemisyntrachelus
WHomalodotherium
WLacui Formation
WNavidad Formation
WNematherium
WNesodon
WOdobenocetops
WPachyrukhos
WPelagornis
WPeltephilus
WPholadomya
WLa Portada Formation
WProthylacinus
WProtypotherium
WPuduhuapi Formation
WRanquil Formation
WRío Frías Formation
WSanto Domingo Formation
WThalassocnus
WTheosodon
WTrapa-Trapa Formation