Dinosaurs took over planet amid cold that other reptiles couldn't survive 200 million years ago, study finds - The Independent

Some parts of the world froze regularly and dinosaurs there ‘did just fine’, scientists say

A mass extinction event about 202 million years ago that wiped out big reptiles of the time, coinciding with a series of sudden global chills, paved the way for dinosaurs to take over the planet, a n… [+642 chars]

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