Widespread volcanic eruptions around 202 million years ago had a profound effect on Earth’s climate, triggering a mass extinction event that killed off three-fourths of the planet’s species, including many large reptiles. Yet dinosaurs, somehow, survived and went on to thrive.
Dinosaurs are often thought of as heat-loving, well suited to the steamy greenhouse environment of the Triassic Period. But the secret to their survival may have been how well adapted they were to the cold, unlike other reptiles of the time. The dinosaurs’ warm coats of feathers could have helped the creatures weather relatively brief but intense bouts of volcanic winter associated with the massive eruptions, researchers report July 1 in Science Advances.
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