https://scitechdaily.com/scientists-solve-a-120-year-old-mystery-how-did-the-monstrous-plesiosaurs-swim/
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8/4/22 at 5:17pm
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A new study reveals how plesiosaurs swam underwater Plesiosaurs, who lived around 210 million years ago, adapted to living underwater in an unusual way: their front and hind legs evolved to become four uniform, wing-like flippers over time. Dr. Anna Krahl exa…
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