New Evidence Reveals Ancient Marine Reptile Mosasaurs Were Warm-Blooded Creatures The ancient aquatic reptile species known as mosasaurs were warm-blooded creatures, not cold-blooded, a new report revealed. These creatures went extinct 66 million years ago. by Alyssa Navarro
Science Scientists Find Dinosaur Blood In 75 Million-Year-Old Fossil: How Did They Do It? by Ted Ranosa