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Footprints From the Past |
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| In 1978 in Laetoli, Tanzania, a research team led by British paleoanthropologist Mary Leakey discovered these 3.6-million-year-old human footprints preserved in a layer of hardened volcanic ash. Two early humans of the species Australopithecus afarensis left the footprints as they walked across the African savanna. | ||||||
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| John Reader/Photo Researchers, Inc. | ||||||
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| Appears in these articles: | ||||||
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| Science; Human Evolution | ||||||
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