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Redating Iztapan and Valsequillo, Mexico

Published online by Cambridge University Press:  18 July 2016

Mario Pichardo*
Affiliation:
27 14th St, W, Minneapolis, Minnesota 55403, USA
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Abstract

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Recent radiocarbon dating of tephra sequences and biostratigraphic analysis in the Valley of Mexico and the Valley of Puebla, respectively, reveal that the FAD (first appearance date) for lanceolate Lerma/El Jobo points at Iztapan and Hueyatlaco archeological sites at about 14–16,000 BP predates the Clovis culture FAD. A lack of interdisciplinary communication is responsible for the neglect of these sites for three decades.

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