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VIDEO:Knowledge

Prehistoric 'Shark' Helicoprion Had Saw-Like Spiral Teeth

Description:It's a mystery that has puzzled paleontologists for a century, but scientists are now gaining a better understanding of a bizarre prehistoric fish called Helicoprion. Researchers at Idaho State University led by Dr. Leif Tapanila published new findings concerning the appearance and evolutionary history of the long-extinct 25-foot predator in Biology Letters on Feb. 27. (3:06)

Source: HuffPost Live Highlights

Tags: fossil shark photos , fossil shark spiral teeth , fossils , helicoprion

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