The mosasaur is an extinct marine reptile that first livedĀ almost 100 million years ago. It had a long, barrel-shaped body; paddle-like flippers; and a large, heavy skull. It grew up to 50 feet long and weighed roughly 15 tons
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The mosasaur is an extinct marine reptile that first livedĀ almost 100 million years ago. It had a long, barrel-shaped body; paddle-like flippers; and a large, heavy skull. It grew up to 50 feet long and weighed roughly 15 tons