Dimwitted Mammals Needed Muscle More Than Brains After Dinosaurs Died - The New York Times

It may have been the smart evolutionary strategy during a chaotic chapter of Earth’s history, but it didn’t last.

However, the reign of dimwitted mammals would not last. In the subsequent Eocene Epoch, roughly 10 million years after the asteroid struck, ecosystems became crowded with large mammals. Resources wer… [+701 chars]

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