Pingski
evidence for pre-Clovis occupation of the Americas has been mounting for years at archaeological sites from Wisconsin and Pennsylvania to Chile.
Now Colorado's Thomas Stafford Jr. and Michael Waters of Texas A&M University report findings that Waters says "puts the final nail in the coffin of the Clovis First model."
New radiocarbon dates from Clovis-site bone, ivory and seeds show that the hunters arrived nearly 500 years later than researchers had thought, at a time when unrelated peoples already lived in North and South America, the researchers conclude.
http://www.rockymountainnews.com/drmn/local/article/0,1299,DRMN_15_5372456,00.html