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What happened to the dinosaurs?

What happened to the dinosaurs?

One theory is that a huge comet or asteroid violently changed the environment. Mark Norell, head of Paleontology at the American Museum of Natural History, says there are other theories too.

CBS News2014年6月8日

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What really happened the day the dinosaurs died?

What really happened the day the dinosaurs died?

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The History of Dinosaurs

The History of Dinosaurs

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Dinosaur Fossils

Paleontologists Find Perfectly Preserved Dinosaur Fossils From the Day of the Asteroid Impact

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New fossils from a small tyrannosaur fill a gap in the scientific record and help explain how Tyrannosaurus rex evolved to become a massive super-predator

New fossils from a small tyrannosaur fill a gap in the scientific record and help explain how Tyrannosaurus rex evolved to become a massive super-predator

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2016年3月14日

Cracking Open an Ancient Ammonite Rock | Yorkshire Fossils

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