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Tiny mammals and a group of lizard-like reptiles shared a trait that helped them survive extinction. 66 million years ago, after an asteroid slammed into the Earth and wiped out the non-avian ...
(via PBS Eons) An asteroid impact triggered the K-Pg mass extinction, wiping out the non-avian dinosaurs, ending the Age of Reptiles, and ushering in the Age of Mammals. But why was it the mammals who ...
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