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How Did the Monstrous Plesiosaurs Swim?

Artist’s idea of a plesiosaur. Plesiosaurs are characterised by 4 uniform flippers. A brand new examine reveals how plesiosaurs swam underwater Plesiosaurs, who lived round 210 million years in the past, tailored to dwelling underwater in an uncommon approach: their entrance and hind legs developed to turn into 4 uniform, wing-like flippers over time. Dr. …

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