A South African-led team of scientists have announced the discovery of what they say is an entirely new hominid species at the Cradle of Humankind world heritage site outside Johannesburg, sparking fresh debate about the nature of our immediate ancestors. Lucille Davie reports.

I stare at the incomplete skeleton in the glass case - did this creature really walk this area almost 2-million years ago? Scientists say so.

Two skeletons have been unearthed at Gladysvale in the Cradle of Humankind, and have been called Australopithecus sediba, an entirely new hominid species.

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