 Both lead to significant challenges to the Clovis First theory.The Monte Verde site of Southern Chile has been dated at 14.8k cal years BP.The Paisley Cave site in eastern Oregon yielded a 14C date of 12.4k years (14.5k cal years) BP, on a coprolite with human DNA and 14C dates of 11.3k-11k (13.2k-12.9k cal years) BP on horizons containing western stemmed points.