Ancient Shark with ‘Spaceship-Shaped’ Teeth Discovered

Remember that popular 1980’s video game Galaga? Little triangle shaped space ships would fly around the screen. Laser cannons would fire out of the top of the ships, laying waste to aliens that dropped down from the top of the screen. Now imagine finding the fossilized teeth of a freshwater shark that lived 67 million years ago in the forests, swamps and winding rivers of what is now South Dakota. Amazingly, those teeth look like the Galaga spaceships! So, if you’re a scientist, what would you call your ancient shark discovery? That’s right. Galagadon.