sharks

  • The Asteroid That Killed The Dinosaurs Also Jumbled Shark Evolution

    The Asteroid That Killed The Dinosaurs Also Jumbled Shark Evolution

    More than 500 different shark species roam Earth’s oceans: From zippy little cookie-cutter sharks, to the iconic great white, to nightmarish goblin sharks, to 7.5m-long, filter-feeding basking sharks. And it seems that the current equilibrium of shark species we see today arose after the Cretaceous–Paleogene mass extinction event 66 million years ago, according to new…