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The reconstructed megadolon was 16 metres long and weighed over 61 tons. In a new 3D modeling study published this week in Science Advances, we show that the giant extinct shark, Otodus megalodon, was a true globetrotting super-predator. It was capable of covering vast distances in short order, and could eat the largest of modern living super-predators, the killer whale, in five gargantuan bites. It could have swallowed a great white shark whole. The largest shark that ever livedMegalodon was the largest shark that ever lived, and it was around for a long time—from around 23 million to 2.6...

Carcharocles turgidus teeth. An 8-year-old boy made a prehistoric discovery this month by finding a giant tooth believed to be from the long-extinct angustidens—a megatooth shark species. Riley Gracely of Pennsylvania discovered the massive tooth during a family vacation to Myrtle Beach, South Carolina. According to Palmetto Fossil Excursions (PFE), the boy discovered a 4.75-inch tooth belonging to the extinct shark Carcharocles angustidens while participating in a fossil-hunting excursion near Summerville. "Truly the find of a lifetime," PFE wrote in an Aug. 11 Facebook post. "This young man just scored a 4.75" Angustiden tooth in our Premium Gravel Layer piles...