Evolution of sharks by Ethan Bartlett
This is the Metaspriggina this is a 514 million year old shark.
This is the Cladoselache, this shark evolved from the Metaspriggina. This shark lived 370 million years ago.
This is the Falcatus it evolved from the Cladoselache. This shark lived 330 million years ago.
This is the Megalodon it evolved from the Otodus. This shark lived 15.5 million years ago. The Megalodon was the largest shark in history.
All of these sharks started in the Paleozoic and evolved all the way into the Cenozoic starting with there oldest ancestor and evolving up into the sharks we have to today like The great white, Bull shark, Tiger shark, Whale shark, etc. Sharks have Lived for a Very long time they date back to 514 million years ago.