WAguja Formation
WAlajuela Formation
WBahia Group
WCairn Formation
WCerro Negro Formation, Argentina
WCoquimbo Formation
WCuche Formation
WDos Bocas Formation
WEl Gallo Formation
WFerris Formation
WGuarujá Formation
WHorseshoe Canyon Formation
WImías Formation
WKeyser Formation
WLa Colonia Formation
WLa Meseta Formation
WLameta Formation
WLefipán Formation
WLetná Formation
WMcMurray Formation
WPisco Formation
WQueenston Formation
WScotland Beds
WTablazo Formation, Ecuador
WTendaguru Formation
WTumblagooda Sandstone
WYahatinda Formation