Clovis First

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Science  02 Mar 2001:
Vol. 291, Issue 5509, pp. 1732
DOI: 10.1126/science.291.5509.1732

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As some investigators struggle to prove the great antiquity of a smattering of archaeological sites in the Americas (see main text), they face a powerful and entrenched theory. For decades, archaeologists have agreed that the first to discover the Americas were the Clovis hunters, who crossed a land bridge from Siberia to Alaska and chased game south into the Great Plains. Before that, the theory goes, North and South America were unoccupied.