Styxosaurus Plesiosaur

Scientists Solve a 120-Year-Old Mystery: How Did Monstrous Plesiosaurs Swim?

Artist’s impression of a plesiosaur. Plesiosaurs are characterized by four uniform fins. New study reveals how plesiosaurs swam underwater Plesiosaurs, which lived around 210 million years ago, adapted to life underwater in an unusual way: their front and back legs evolved into four uniform wing-like fins over time. time. Dr. Anna Krahl examined how they …

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