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Long before dinosaurs walked the land a massive armored fish called Dunkleosteus dominated ancient seas Its fossilized head plates and blade like jaws have led some to describe it as a "sea monster" ...

Cleveland’s iconic prehistoric sea monster—the 14-foot-long armored fish Dunkleosteus terrelli—just got a lot stranger. This marine apex predator lived some 360 million years ago, had razor-sharp bone ...

Add Yahoo as a preferred source to see more of our stories on Google. Dunkleosteus ruled a restless Devonian ocean, where armor met innovation. Here’s how modern science is rewriting the story of this ...