WAbanico Formation
WAngostura Formation, Ecuador
WAyacara Formation
WBarzalosa Formation
WBiblián Formation
WCaleta Herradura Formation
WCastilletes Formation
WCastillo Formation, Venezuela
WCerro Azul Formation
WCerro Plataforma Formation
WCollón Curá Formation
WCoquimbo Formation
WCura-Mallín Group
WFarellones Formation
WGaiman Formation
WHuayquerías Formation
WJimol Formation
WLacui Formation
WLetrero Formation
WNavidad Formation
WPisco Formation
WLa Portada Formation
WPuduhuapi Formation
WRanquil Formation
WRío Frías Formation
WSanto Domingo Formation
WTrapa-Trapa Formation
WTuira Formation
WUitpa Formation
WUrumaco
WViche Formation
WWare Formation