Hybodus is a genus of prehistoric sharks that lived during the late Permian to Early-Middle Cretaceous periods. It was a once wildly successful prehistoric shark that became extinct hundreds of millions of years after it first evolved.
It was about 2.5 metres long, making it a modest shark in size. As one of the most bizarre prehistoric sharks, Hybodus had strange horns on the top of their heads. When they bit into large prey, they twisted to get a chunk of flesh. These predators had acute hearing, and the sound of splashing betrayed an animal in distress.