Redefining the Age of Clovis: Implications for the Peopling of the Americas

@article{Waters2007RedefiningTA,
  title={Redefining the Age of Clovis: Implications for the Peopling of the Americas},
  author={Michael R. Waters and Thomas W. Stafford},
  journal={Science},
  year={2007},
  volume={315},
  pages={1122 - 1126}
}
The Clovis complex is considered to be the oldest unequivocal evidence of humans in the Americas, dating between 11,500 and 10,900 radiocarbon years before the present (14C yr B.P.). Adjusted 14C dates and a reevaluation of the existing Clovis date record revise the Clovis time range to 11,050 to 10,800 14C yr B.P. In as few as 200 calendar years, Clovis technology originated and spread throughout North America. The revised age range for Clovis overlaps non-Clovis sites in North and South… 
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Comment on "Redefining the Age of Clovis: Implications for the Peopling of the Americas"

Waters and Stafford (Reports, 23 February 2007, p. 1122) provided useful information about the age of some Clovis sites but have not definitively established the temporal span of this cultural…

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