The Paisley Caves in Oregon record the oldest directly dated human remains (DNA) in the WesternHemisphere. More than 100 high-precision radiocarbon dates show that deposits containingartifacts and coprolites ranging in age from 12,450 to 2295 14 C years ago are well stratified.Western Stemmed projectile points were recovered in deposits dated to 11,070 to 11,340 14 C yearsago, a time contemporaneous with or preceding the Clovis technology. There is no evidence ofdiagnostic Clovis technology at the site. These two distinct technologies were parallel developments,not the product of a unilinear technological evolution. “Blind testing” analysis of coprolites by anindependent laboratory confirms the presence of human DNA in specimens of pre-Clovis age.The colonization of the Americas involved multiple technologically divergent, and possiblygenetically divergent, founding groups.