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Radiator-nosed dinosaur?

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A bipedal, German shepherd–sized dinosaur may have had soft tissues in its nasal cavity that cooled the blood flowing to its brain, a new study suggests. The plant-eating Stegoceras validum belongs to a group called pachycephalosaurs (which in Greek means “thick-headed lizards”). CT scans of one particularly well preserved skull revealed delicate scrolls of bones in a chamber at the rear of the creature’s nasal cavity—bones that would have been covered with soft tissue containing smell receptors, researchers say.

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