Scientists cite evidence that mosasaurs were warm-blooded

Mosasaurs ? an extinct group of aquatic reptiles that thrived during the Late Cretaceous period ? possibly were ?endotherms,? or warm-blooded creatures. Mosasurs were large aquatic reptiles that went extinct at the end of the Cretaceous period, about 66 million years ago.
Paleontology News — ScienceDaily

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