In the early 20th century it was thought that dinosaurs were slow-moving creatures that relied on heat from the sun to regulate their temperature.
The ability to regulate body temperature, a trait all mammals and birds have today, may have evolved among some dinosaurs around 180 million years ago, a study suggests.
Researchers found that two of the three main groupings of dinosaurs, theropods and ornithischians , moved to colder climates during the Early Jurassic.The findings also indicate that sauropods, including brontosaurus and the diplodocus, kept to warmer areas of the planet. First author Dr Alfio Alessandro Chiarenza, of UCL Earth Sciences, said: “Our analyses show that different climate preferences emerged among the main dinosaur groups around the time of the Jenkyns event 183 million years ago, when intense volcanic activity led to global warming and extinction of plant groups.
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