Behold the Helicoprion, a confusing prehistoric fish that belongs in H.R Giger's world.
Lived over 275 million years ago, it's saw-like whirly-tooth tongue thingy had scientists scratching their heads for a long time. So little fossil remains have been found, we'll never get to know exactly what it looked like.
Unless idiot scientists in a scifi movie try to clone it š¤£ Watch em try to stick it in a jurassic world movie.
https://fossil.fandom.com/wiki/Helicoprion
https://api.nationalgeographic.com/distribution/public/amp/animals/2019/12/ancient-shark-like-predator-had-jaw-like-buzz-saw-blade