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Size of mammal ancestors' ear canals reveal when warm-bloodedness evolved
Updated : 3 years, 8 months ago IST
Washington [U.S], July 21 (ANI): Warm-bloodedness is a key mammal trait, but it's been a mystery when our ancestors evolved it. A new study points to an unlikely source for telling a fossil animal's body temperature: the size of tiny structures in their inner ears. The fluid in our ears beco
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