Dinosaurs and the Terrible, Horrible, No Good, Very Bad Day

Dinosaur extinction could have just been really, really bad luck. The 6.2-mile-wide20140728-184644-67604129.jpg Chicxulub asteroid may have caused the mass extinction. “The asteroid almost certainly did it, but it just so happened to hit at a bad time when dinosaur ecosystems had been weakened by a loss of diversity. If the asteroid hit a few million years earlier, when dinosaurs were more diverse, or a few million years later, when they had a chance to recover as they often had done before after diversity losses, then dinosaurs probably wouldn’t have gone extinct,” said University of Edinburgh vertebrate paleontologist and evolutionary biologist Stephen Brusatte.
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