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　　Gedeon Programmes© In July 2001, in the Djurab Desert of northern Chad, a Franco-Chadian expedition headed by paleoanthropologist Michel Brunet discovered a seven-million-year-old fossil skull. After the discoveries of “Lucy” and then “Abel”, this major find has pushed the date for the earliest emergence of hominids back even further. Researchers have been studying the skull cl... (展开全部)