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Monday, April 16, 2018

Dinosaurs ended -- and originated -- with a bang!

https://ift.tt/eA8V8J It is commonly understood that the dinosaurs disappeared with a bang -- wiped out by a great meteorite impact on the Earth 66 million years ago. But their origins have been less understood. In a new study, scientists show that the key expansion of dinosaurs was also triggered by a crisis -- a mass extinction that happened 232 million years ago.

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