Another Emissary From the Dawn of Humanity

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Science  13 Jul 2001:
Vol. 293, Issue 5528, pp. 187-189
DOI: 10.1126/science.293.5528.187b

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Fossils unearthed in Ethiopia and reported in this week's issue of Nature offer a glimpse of the time when humans and chimps were going their separate evolutionary ways--and may represent the earliest known human ancestor. The remains--a jawbone with teeth as well as arm, hand, and foot bones--have been dated at between 5.2 million and 5.8 million years old. From the shape of one nearly complete foot bone, the discoverers conclude that their specimen walked upright, a hallmark of all hominids.