The evolutionary history of humans is complex and unresolved. It now looks set to be thrown into further confusion by the discovery of another species and genus, dated to 3.5 million years ago.
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Lieberman, D. Another face in our family tree. Nature 410, 419–420 (2001). https://doi.org/10.1038/35068648
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DOI: https://doi.org/10.1038/35068648
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