Mammals were NOT the first warm-blooded creatures - it appeared 30 million years earlier - Daily Mail

Warm-bloodedness evolved 233 million years ago in creatures of the late lizard lineage. This arose during a time of climate instability and the animals needed to regulate body temperature.

Warm-bloodedness is a key trait of mammals, but a new study shows the first creatures to produce their own body heat and regulate body temperature were part of the late lizard lineage. Researchers f… [+3332 chars]

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