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Thread: Oldest Modern Human Outside of Africa Found

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    Oldest Modern Human Outside of Africa Found

    Chinese fossil challenges traditional early-human time line, study says.

    Rachel Kaufman

    for National Geographic News

    Published October 25, 2010

    A fossil human jawbone discovered in southern China is upsetting conventional notions of when our ancestors migrated out of Africa.

    The mandible, unearthed by paleontologists in China's Zhiren Cave in 2007, sports a distinctly modern feature: a prominent chin. But the bone is undeniably 60,000 years older than the next oldest Homo sapiens remains in China, scientists say.

    In fact, at about a hundred thousand years old, the Chinese fossil is "the oldest modern human outside of Africa," said study co-author Erik Trinkaus, an anthropologist at Washington University in St. Louis.

    Popular theory states that Homo sapiens migrated out of Africa about 60,000 years ago, at which point modern humans quickly replaced early human species such as Homo erectus and Homo neanderthalensis across the world.

    Finding such an ancient example of a modern human in China would drastically alter the time line of human migration. The find may also mean that modern humans in China were mingling—and possibly even interbreeding—with other human species for 50,000 or 60,000 years.

    What's more, the find seems to suggest that anatomically modern humans had arrived in China long before the species began acting human.

    For example, symbolic thought is a distinctly human trait that involves using things such as beads and drawings to represent objects, people, and events. The first strong evidence for this trait doesn't appear in the archaeological record in China until 30,000 years ago, Trinkaus said.

    Hoping for DNA Evidence

    So far, genetic evidence largely supports the traditional timing of the "out of Africa" theory. But the newly described China jawbone presents a strong challenge, said anthropologist Christopher Bae of the University of Hawaii, who was not associated with the find.

    "They actually have solid dates and evidence of, basically, a modern human," he said.

    Still, the jaw and three molars were the only human remains retrieved from the Chinese cave, and the jaw is "within the range" of Neanderthal chins as well as those of modern humans, added paleoanthropologist John Hawks of the University of Wisconsin, Madison.

    "If this holds up, we have to reevaluate" the human migration time line, he said.

    "Basically, I think they're right, [but] I want to see more evidence," Hawks added. "I really, really hope that there can be some sort of genetic extraction from this [fossil]."

    http://news.nationalgeographic.com/n...frica-science/

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    The "Out of Africa" theory proposes that modern humans evolved in Africa and then spread throughout the earth somewhere around 60,000 years ago, replacing earlier humans with little or no interbreeding.

    The new specimen from China is basically a modern human, but it does have a few archaic characteristics, particularly in the teeth and hand bone. According to Trinkaus, this morphological pattern implies that a simple spread of modern humans from Africa is unlikely, especially since younger specimens have been found in Eastern Eurasia with similar feature patterns.

    http://www.articlesafari.com/2010/09...lly-identical/

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    It all makes sense now.

    The 'Out of Africa' theory only makes sense if you place it in contex.
    It only started around 1994 when the whites who could started to leave South Africa for civilized pastures as the dark continent is getting darker by the day.

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