Oldest Human Footprints in the Southwest Discovered at Tucson Construction Site
The footprints of ancient farmers, their children, and even their dogs have been found perfectly preserved at a construction site just north of Tucson.
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Oldest Human Footprints in the Southwest Discovered at Tucson Construction Site
The footprints of ancient farmers, their children, and even their dogs have been found perfectly preserved at a construction site just north of Tucson.
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