The Charybdis of the Jurassic seas. It could take down tyrannosaurus in a duel. It could do this:
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Yep, rip through a reptile's neck with a load of blood. Bearing in mind the scales. But it had limits. It was on the menu for creatures like predator x. Many pliosaurs were bigger. Nearly all the sea creatures from the Mesozoic died out when the sea was flooded into the freshwater, due to their dependence on the water. Less Charybdis, more ancient crickety boat.
