Multimedia Gallery
March 23, 2009
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Ancient stone tools used to grind and mill maize and squash were found in the Xihuatoxtla Shelter.
This 8,700 year-old milling stone was used to process maize and other crops. Maize starch grains were recovered from the cracks and crevasses in the slightly concave surface of the tool.
Credit: Anthony J. Ranere, Anthropology Department, Temple University
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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