Fossil Auriculatus Shark Teeth

Auriculatus was a large “mega-toothed” shark that lived during the Middle Eocene (38 to 48 million years ago). It had coarsely serrated teeth with distinctive serrated side-cusps. During the Oligocene, Auriculatus would evolve into Carcharocles angustidens , which in turn evolved into the much larger and better known megalodon during the Miocene.