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Fossil May Reveal When Humanity’s Ape Ancestors Split from Monkeys

Discover the significance of the Saadanius hijazensis fossil in understanding the evolution of primates and our divergence from monkeys.

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Perhaps you're one of those people who get their dander up when you hear creationists saying "I'm not descended from some monkey" not only for the obvious reason, but also because you can't help but blurt out, "No, you mean 'ape!' We're apes, not monkeys." Indeed, our superfamily, Hominoidea, split from the group labeled "old world monkeys" millions of years ago—but perhaps not as many million as we thought. In Nature this week, a team of scientists report on a 28-29 million year old fossil that appears to predate the split, meaning the separation would have happened more recently than other studies suggested. The partial skull of this new creature, which the team dubbed Saadanius hijazensis, turned up in Saudi Arabia in February 2009.

Saadanius sports a projecting snout, a relatively tall face with long, narrow nasal bones, broad cheek teeth and other traits resembling those of older primates previously ...

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