Prehistoric giant shark discovered 290 million years ago in

Megalodon: The Biggest Shark To Ever Live

Complete List Of Extinct Sharks, From the Meg to the Otodus

A rare ancient shark has been identified by New Mexico paleontologists

Pictures and Profiles of Prehistoric Sharks

How big was Megalodon compared to a great white shark? - Quora

Unraveling the Nature of the Whorl-Toothed Shark

The Largest Shark to Have Ever Lived Was 52.5 Feet Long, Researchers Confirm

Helicoprion is an extinct genus of shark that lived during the Permian period, approximately 290 to 250 million years ago. It is known fo

January, 2019