No, this is not a storyboard illo from a lousy SyFy original movie

“Buzzsaw shark” was real:

This is an artist’s recreation of Helicoprion, a 270-million year old shark that roamed the ocean preying on other marine life WITH ITS FULL 360-DEGREE SPIRAL BUZZSAW OF TEETH. Now? Now it’s extinct except for in our nightmares starting tonight.

I so want a secret base guarded by a swarm of these. Infiltrate that, Mr. Bond!