Warm-bloodedness may have first arisen in dinosaurs some 180 million years ago.Dinosaurs were once thought to have been cold-blooded like their modern-day reptilian cousins. Recent findings suggest that some species of dinosaur had indeed evolved to be warm-blooded, but until now, paleontologists weren't sure when this trait arose.
'Interestingly this diversity might have originated after an environmental crisis caused by volcanically induced global warming.'This change is thought to have occurred as a result of a period of intense volcanic activity known as the Jenkyns event, which occurred around 183 million years ago. This resulted in major climatic changes across the globe, significantly increasing the temperatures in certain regions.
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