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From Michael Greshko at National Geographic:
“We’ve been looking for ape fossils for years—this is the first time we’re getting a skull that’s complete,” says Isaiah Nengo, the De Anza College anthropologist who led the discovery, supported by a National Geographic Society grant and the Stony Brook University-affiliated Turkana Basin Institute.
Roughly the size of a lemon, the skull belongs to a newly identified species of early ape named Nyanzapithecus alesi. Some of its features resemble those of today’s living Old World monkeys and apes, and the face bears a striking resemblance to today’s infant gibbons.
What’s more, N. alesi offers insight into early apes’ brains, the team reports in their study, published today in Nature. With a volume of about seven tablespoons, N. alesi’s brain cavity was more than double that of other Old World monkeys from the time. More.
What we really need is a much bigger data set. That’s what sets serious science apart from pop science speculation.
See also: Human/primate evolution: Eating fruit led to bigger brains?
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Large human brain size easily explained?
Repurposed mammal bone gene fuels cognition in humans?
Human origins: The war of trivial explanations