VIDEO: ancient reptile & # 039; He swam like a penguin & # 039;

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Ancient reptile "swam like a penguin"

December 18, 2015 Last updated at 09:29 GMT

Plesiosaurs - marine reptile that the seas of the world in which dinosaurs ruled the earth patrolled - like penguins swim with their fins to "fly" underwater, scientists say.

It resolves a debate that began almost 200 years ago.

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