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The Cretaceous period ended with a bang 66 million years ago when an asteroid more than six miles across collided with the Earth off of the Yucatan Peninsula. The resulting prodigious environmental change to land, sea, and atmospheric habitats ultimately...

Paleo-ecologists from The University of New Mexico and at the University of Nebraska-Lincoln have demonstrated that the offspring of enormous carnivorous dinosaurs, such as Tyrannosaurus rex may have fundamentally re-shaped their communities by...