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Plesiosaur
What type of animal is a plesiosaur?
plesiosaur, (clade Plesiosauria), any of a group of long-necked marine reptiles found as fossils from the Late Triassic Period into the Late Cretaceou...
How did the plesiosaur swim?
The team reports that the mechanical plesiosaurs swam best when all four flippers were used for swimming. ... As the front flippers flapped, they crea...