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Sahelanthropus tchadensis

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Guide to Sahelanthropus, Orrorin and Ardipithecus

These fossil species between 8 million and 4.4 million years old include some of the earliest members of the hominin lineage.

Ardipithecus hand skeleton next to a human hand X-ray image
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What's the deal with the Sahelanthropus femur?

A news story by Ewen Callaway investigates the mysterious case of this purported earliest bipedal hominin.

Skull of Sahelanthropus tchadensis reconstruction in a museum exhibit
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Features of the Grecian ape raise questions about early hominins

A review of work published in 2017 describing fossil material of Graecopithecus freybergi from Greece and Bulgaria.

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Have Sahelanthropus and Orrorin been written out of existence?

A big argument about the so-called savanna theory comes with a surprising claim about the earliest possible hominin fossils.

Artistic image of a skull of Sahelanthropus enshrouded by fog and clouds
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Did somebody bury the bones of Toumaï?

I recount the complicated story of how a discoverer of the Toumaï skull has raised doubts about its context.

Skull of Sahelanthropus tchadensis