A new study estimates that warm-blooded dinosaurs emerged about 180 million years ago, halfway through their time on Earth. Warm-blooded creatures maintain a constant body temperature, unlike cold-blooded animals.
Dinosaurs – family tree
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Researchers analyzed over 1,000 fossils, climate models, and dinosaur family trees, finding that two major dinosaur groups migrated to colder areas during the Early Jurassic period, suggesting they could regulate their body heat. A third group, including brontosaurs, remained in warmer areas. This research, published in Current Biology, could provide insights into dinosaur activity and social behavior. Some scientists believe warm-bloodedness may have evolved earlier, around 250 million years ago.
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