The ancient seafloor around what is now Darwin, Australia, once teemed with Cretaceous sea monsters - long-necked plesiosaurs, torpedo-shaped fish-lizards, and massive bony fish cruised the southern ...

Learn how newly discovered vertebrae from a 6- to 8-meter shark pushes the origin of mega-predators back by 15 million years. Anastasia Scott is an Editorial Assistant at Discover Magazine. Her work ...