Toumai in the News

Sahelanthropus tchadensis has been the object of some controversy for quite awhile. Its discoverer, Michel Brunet, considers it to be close to the human-chimp split on the hominin side. While critics think it is on the hominoid side of things. I bring this up because of a recent article (press release?) on PhysOrg that questions the dating of Toumai that was published in PNAS (See my post on the subject). As Hawks points out this is a pretty abysmal article (mistakenly calling cosmogenic nuclide dating carbon dating for example).

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New Date on Sahelanthropus tchadensis and Australopithecus bahrelghazali

A new article in PNAS discusses the use of a new dating technique that has been used to come up with a new date for Sahelanthropus tchadensis and a specimen of Australopithecus bahrelghazali. The new method dates Sahelanthropus tchadensis to around 6.8-7.2 MYA, while the Australopithecus bahrelghazali specimen is dated to around 3.58 MYA.

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