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Ancient stone tools hint at settlers’ epic trek to North America

16,000-year-old artefacts discovered in Idaho could be the oldest ever found on the continent.
  1. Ewen Callaway
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Projectile points and other stone tools recovered near a riverbank in Idaho suggest that ancient humans reached the western United States more than 16,000 years ago.

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doi: https://doi.org/10.1038/d41586-019-02589-2

References

  1. Davis, L. et al. Science 365, 891–897 (2019).

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  3. Heintzman, P. D. et al. Proc. Natl Acad. Sci. USA 113, 8057–8063 (2016).

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