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A prehistoric fish. Existed during the Late Devonian period. About 358–382 million years ago.
Person: Hey dude! Heard of a dunkleosteus?
Person 2: Yep.
by BruoGD June 29, 2017
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A prehistoric fish that lived during the late Devonian period. It had thick armor plates of bone over its head and neck for protection.

The teeth of Dunkleosteus were fearsome sharp blades of bone. They could easily slice through the armor of other hard-bodied animals.
Some fossils of Dunkleosteus have bite marks from the teeth of other Dunkleosteus. So these massive fish were probably cannibals.
by Nordicdragon June 27, 2018
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