This predatory fish had armor around it's head and jaws and had no teeth. Instead it had self sharpening blades from it's jaw plates. When hunting the jaws would snap shut on it's prey. The armor didn't

Steepshot | IPFS | Google Play

The terrible Dunkleosteus plunges from the water in the latest illustration of a series of drawings I've been making for @verbal-d 's story They Didn't See it Beneath them. I added some detail shots here