One of the richest collections of early-human fossils ever found has been taken out of an African cave，thanks to the efforts of a team of scientists small enough to fit through ancient narrow ways. The fossils，discovered in the dark places of the Rising Star cave in South Africa，belong to a new species that appeared at the beginning of the family that includes modern humans.The fossils could be more than 2.5 million years old.Or they could be relatively recent.Homo sapiens(智人)appeared in Africa roughly 200,000 years ago，so the bones are at least that old.

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