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| Sahelanthropus tchadensis - reconstructed skull - picture by Didier Descouens |
a. Homo sapiens b. Pan troglodytes c. Australopithecus africanus d. Reconstruction
Zollikofer, C, Ponce de Leon, M, Lieberman, D., Guy, F., Pilbeam, D., ... Brunet, M. (2005). Virtual Cranial Reconstruction of Sahelanthropus tchadensis. Nature, 434, 755-759 Retrieved on January 30, 2012 doi:10.1038/nature03397.
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