An undated image released by the Royal Belgian Institute of Natural Sciences shows the skeleton of a recently discovered dinosaur dubbed Aurornis xui that roamed China during the middle to late Jurassic period. A new study published in the journal Nature finds the discovery restores the fossil creature Archaeopteryx back to the “bird” branch of the evolutionary family tree. (AP Photo/Thierry Hubin, Royal Belgian Institute of Natural Sciences)

Associated Press
An undated image released by the Royal Belgian Institute of Natural Sciences shows the skeleton of a recently discovered dinosaur dubbed Aurornis xui that roamed China during the middle to late Jurassic period. A new study published in the journal Nature finds the discovery restores the fossil creature Archaeopteryx back to the “bird” branch of the evolutionary family tree. (AP Photo/Thierry Hubin, Royal Belgian Institute of Natural Sciences)
An undated image released by the Royal Belgian Institute of Natural Sciences shows the skeleton of a recently discovered dinosaur dubbed Aurornis xui that roamed China during the middle to late Jurassic period. A new study published in the journal Nature finds the discovery restores the fossil creature Archaeopteryx back to the “bird” branch of the evolutionary family tree. (AP Photo/Thierry Hubin, Royal Belgian Institute of Natural Sciences)
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