 Dinichthyloidea

The Dinichthyloidea is an extinct superfamily of placoderms, armored fish most diverse during the Devonian.They contain numerous extremely large species, such as "Titanichthys", presumed to be a planktivore, the apex predator "Dinichthys", as well as numerous other genera of diverse size and habits, such as the tiny "Rhachiosteus", the superficially tuna-like "Bungartius", and the selenosteids and trematosteids.