Scientists pinpoint the exact time in evolution when mammals became warm-blooded

Scientists pinpoint the exact time in evolution when mammals became warm-blooded

Scientists pinpointed when our earliest ancestors evolved to become warm-blooded, and it happened much later and much faster than researchers predicted.

The discovery, made by studying the tiny tubes of the inner ear, places the evolution of warm-blooded mammals around 233 million years ago, 19 million years later than scientists previously thought.

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