amblyodoratus is known from some fragmentary remains from Late Devonian strata of Kettle Point, Canada.
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After studying a biomechanical model of the fish's jaws, scientists at the Field Museum of Natural History and the University of Chicago concluded that Dunkleosteus had the second most powerful bite of any fish (megalodon being the strongest).
In the 2003 TV documentary Sea Monsters, a spin-off from the 1999 series Walking with Dinosaurs, a Stethacanthus was briefly shown circling a large shark cage before being scared away by a much larger Dunkleosteus.