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Ancient Teeth News: Tiny Teeth Reveal First Mammals Lived Like Reptiles

Ancient Teeth News: Tiny Teeth Reveal First Mammals Lived Like Reptiles

Written By Kevin Kerfoot / Reviewed By Ray Spotts

Researchers from the University of Bristol, UK and University of Helsinki, Finland suggest that 200 million-year-old teeth belonging to the earliest mammals functioned like their cold-blooded counterparts - reptiles, leading less active but much longer lives. This marks the first time palaeontologists have been able to study the physiologies of early fossil mammals directly, and revises what was previously believed about our earliest ancestors.
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