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Biography

Dunkleosteus is an extinct genus of large armored, jawed fishes that existed during the Late Devonian period, about 358–382 million years ago. It consists of ten species, some of which are among the largest placoderms to have ever lived: D. terrelli, D. belgicus, D. denisoni, D. marsaisi, D. magnificus, D. missouriensis, D. newberryi, D. amblyodoratus, and D. raveri. The largest and most well known species is D. terrelli, which grew up to 8.79 m (28.8 ft) long[1] and 4 t (4.4 short tons)[2] in weight. Dunkleosteus could quickly open and close its jaw, like modern-day suction feeders, and had a bite force of 6,000 N (612 kgf; 1,349 lbf) at the tip and 7,400 N (755 kgf; 1,664 lbf) at the blade edge. Numerous fossils of the various species have been found in North America, Poland, Belgium, and Morocco. The genus name combine's David Dunkle's surname with the Greek word ὀστέον (ostéon 'bone'), literally meaning 'Dunkle's-bone'.