Get rotated shark

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Whorl Shark (Helicoprion) lived 280-225 million years ago. Modern sharks continue to grow teeth throughout their lives and shed old teeth. Ancient sharks grew new teeth, but kept the old teeth as well. In some species, old teeth migrated to the face to make room for teeth in the jaw. In the whorl shark, old teeth were just rotated around. Weird Sharks, Prehistoric Sea Creatures, Deep Sea Creature, Weird Sea Creatures, Creature Marine, Extinct Species, Strange Animals, Prehistoric Dinosaurs, Prehistoric World

We are in the midst of the Discovery Channel's annual celebration known as Shark Week. In honor of the occasion, here's a look at the strangest species of sharks, both living and extinct. 1. Sawshark (Image credit: Flickr user Gore Fiendus/Jerry Frausto) There are seven known species of sawsharks (Pristiophoriformes) that have long snouts with teeth, but they are not related to sawfish (although sawsharks are fish). They swim along the floor of the ocean and use their snouts exactly as you…

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