Sharks might not be as deadly as their reputation suggests, but they're still pretty much the last thing that we'd like to run into while taking a dip in the ocean. The only thing worse would be a prehistoric shark. They got downright freaky. Take Helicoprion, for example. If you encountered one back when they existed around 250 million years ago, you'd see the business end of a buzzsaw swimming straight for you.
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Written by Reuben Westmaas February 12, 2018
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