The Mammals Who Lived

When the asteroid slammed into prehistoric Mexico and drew the curtain on the Cretaceous, dinosaurs did not fare very well. All but the toothless birds soon died. The aftermath of the impact wasn't kind to the rest of life on Earth, either. Entire plant communities withered and died, their rotting leaves and trunks feeding pioneering fungi that eventually gave way to ferns and then forests as sunlight started to peek through the dusty skies.

Mammals are often presented as being more resilient. Life beneath the claws of the dinosaurs had kept them small and wily ...

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