> What different species did the prehistoric shark evolve into?
The Great White and the Whale Shark for two. These did not exist 30 million years ago. They do today. Megalodon existed 2 million years ago. It does not today. Evolution and extinction occur.
A shark is a shark is a shark. Those are not different species. They are still SHARKS, lol. Send me a flare when a shark turns into a ring tailed baboon.