World's oldest-known burial site found in S Africa

Paleontologists in South Africa said on June 5 they have found the oldest known burial site in the world, containing remains of a small-brained distant relative of humans previously thought incapable of complex behavior.

Led by renowned paleoanthropologist Lee Berger, researchers said they discovered several specimens of Homo naledi - a tree-climbing, Stone Age hominid - buried about 30 meters (100 feet) underground in a cave system within the Cradle of Humankind, a UNESCO world heritage site near Johannesburg.

"These are the most ancient interments yet recorded in the hominin record, earlier than evidence of Homo sapiens interments by at least 100,000 years," the scientists wrote in a series of yet to be peer reviewed and preprint papers to be published in eLife.

The findings challenge the current understanding of human evolution, as it is normally held that the development of bigger brains allowed for the performing of complex, "meaning-making" activities such as burying the dead.

The oldest burials previously unearthed, found in the Middle East and Africa, contained the remains of Homo sapiens and were around 100,000 years old.

Those found in South Africa by Berger, whose previous announcements have been controversial, and his fellow researchers, date back to at least 200,000 BC.

Critically, they also belong to Homo naledi, a primitive species at the crossroads between apes and modern humans, which had brains about the size of oranges and stood about 1.5 meters (five feet) tall.

With curved fingers and toes, tool-wielding hands and feet made for walking, the species discovered by Berger had already upended the notion that our evolutionary path was a straight line.

Homo naledi is named after the "Rising...

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