This artist concept provided by the Beijing Institute of Vertebrate Paleontology and Paleoanthropology shows Y. huali and other smaller dinosaurs roaming 125 million years ago. A new study published in the journal Nature found that Y. huali, an earlier relative of T. rex, had a feathery coat, suggesting that the king of dinosaurs may have also been fuzzy. (AP Photo/Beijing Institute of Vertebrate Paleontology and Paleoanthropology, Brian Choo)

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