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----------------------- the mighty Dunkleosteus terrelli continues be a source of wonder and study within the permanent collection of The Cleveland Museum of Natural History.”(The Cleveland Museum Of Natural History)

This is Dunkleosteus, one of the first jawed vertebrates, and one of the largest of the armored fishes called placoderms.

The fossil record indicates that this fish was an aggressive predator.

Name: Dunkleosteus (Greek for "Dunkle's bone"); pronounced dun-kul-OSS-tee-us

Habitat: Shallow seas worldwide

Historical Period: Late Devonian (380-360 million years ago)

Size and Weight: About 30 feet long and 3-4 tons

Diet: Marine animals

Distinguishing Characteristics: Large size; lack of teeth; thick armor plating

The Cleveland Connection

1867

Thanks to the work of these early fossil hunters, former Vertebrate Paleontology curator Dr. David Dunkle, and countless experts and enthusiasts over the years,

According to the Cleveland Museum of natural history. These long-extinct armored fish lived in the Cleveland area, which at the time—well before humans or dinosaurs existed—was covered by a shallow sea.The sea is gone but the sediments (sandstones and shales) that were laid down during its presence remain. As these rocks erode through the action of water and wind, a rich variety of fossil fish from the Late Devonian have been uncovered and collected. These finds have made Cleveland famous in the world of paleontology. It was first discovered in 1867 on the shores of Sheffield Lake by local amateur fossil hunter named Jay Terrell, who was one of a group of fossil hunters in the Cleveland area

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Dunkleosteus' head and upper body were covered by bony armor that protected the fish from other animals. The rest of its body was able to move freely, with its shark-like tail helping to power and steer the creature through water.

The Cleveland Museum of Natural History

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