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¡¡Â°Ì¾¡ÊDunkleosteus ¡Ë¡¡Ãæ¹ñ̾¡Êûý»áµû¡Ë
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Classification
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Fish, Placodermi, Arthrodira, Dinichthyidae
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Fossil range
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Late Devonian
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Habitat
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Sea in North America and Africa
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Body length
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5 - 9 m
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Dunkleosteus belonged to the group of Placoderm (jawed fishes)
which is more evolved than Agnatha (jawless fishes). They were
carnivorous fishes to eat other animals because of having jaw structure .
Dunkleosteus, like sharks, were a type of fish with a cartilaginous
skeleton and had no swim bladder for buoyancy, therefore it is believe
that they had to swim continuously or crawl along the ocean floor.
Dunkleosteus and sharks had in common, and it is thought
that Placoderms shared a common ancestor with sharks.
Dunkleosteus were the largest species of Placoderm, and we know nothing about
Dunkleosteus's body except their head, but it could reach 9 metres in length.
It would probably dominate marine ecosystems at that time.

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