The group was characterised by having a short neck and an elongated head, in contrast to the long-necked plesiosaurs. They were carnivorous and their long and powerful jaws carried many sharp, conical teeth. Pliosaurs range from 4 to 15 meters in length.[1][2] Their prey may have included fish, ichthyosaurs and other plesiosaurs. Pliosaurs almost entirely disapeared by the mid-Cretaceous. They were replaced by the mosasaurs.
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