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About: Xalnene Tuff footprints     Goto   Sponge   NotDistinct   Permalink

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Type: Food New Facet based on Instances of this Class

The Xalnene Tuff footprints are a geological academic controversy, concerning a 2005 discovery of 269 markings in a geological layer in the Valsequillo Basin, south of the city of Puebla, Mexico, which were originally interpreted to be human and animal footprints. The layer was variously dated to 40,000 years Before Present (BP) or 1.3 million years BP, both dates significantly before the currently accepted date for the settlement of the Americas. A 2010 study argues that the marks were made by recent mining activities.