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Smithsonian Magazine on MSNThis Surprising Ancient Reptile Had a Colorful, Corrugated Sail on Its Back. New Research Suggests It Was Used to CommunicatePreserved in tan stone, the fossil of Mirasaura included much of the ancient reptile’s skeleton and a feather-like fan that ...
During the Triassic period nearly 250 million years ago, a small reptile scurried after insects in the canopy of a lush ...
Body coverings such as hair and feathers have played a central role in evolution. They enabled warm-bloodedness by insulating ...
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