Extinct Megalodons Swam Slower to Eat More
Sharks are often imagined as lethal predators with rows of razor-sharp teeth and capable of zipping through the water at high speeds. But it seems in the case of the famous prehistoric shark Otodus megalodon, only one of those premises holds true.Forget Collars—There's a Kinder Way to Track Polar Bears in the ArcticIn a study published in Historical Biology, a team of researchers describe very small O. megalodon scales found in Japan. These sand-grain-sized placoid scales, or denticles, show up in elasmobranchs, a group!-->…