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Figure 1. Trail of hominid footprints fossilized in volcanic ash. This 70 meter trail was found by Mary Leakey's expedition in Laetoli, Tanzania in 1978. The trail probably belongs to Australopitechus afarensis and dates from 3.7 to 3.0 million years ago. (Photo by John Reader, reproduced here by his kind permission.)



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Figure 2. Negative hand and dots, Pech Merle. (Photo by Jean Vertut, reproduced here by kind permission of Yvonne Vertut.) For more handprints see Rock Art/Hands.



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