Word: yunnanozoon
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...published by the journal Nature, an international team of scientists reported finding the exquisitely preserved remains of a 1-in.- to 2-in.-long animal that flourished in the Cambrian oceans 525 million years ago. From its flexible but sturdy spinal rod, the scientists deduced that this animal - dubbed Yunnanozoon lividum, after the Chinese province in which it was found - was a primitive chordate, the oldest ancestor yet discovered of the vertebrate branch of the animal kingdom, which includes Homo sapiens...
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