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thick tail
Until this point the Precambrian was thought to be completely devoid of fossils and consequently possibly of life
5 feet) long
but average and small knobs could not"
bony plates called scutes giving it the appearance of a giant turtle
Dunkleosteus, model Baryonyx thick tailDunkleosteus, the biggest member of the family Dinichthyidae ("terrible fishes"), was a heavily armored primitive fish from the late Devonian period, about 360 million years ago. This top predator was up to 11. 5 ft (3. 5 m) long and had large, scissor like cutting jaws with serrated, razor sharp bones, but no teeth. Its skull was was over 2 feet (65 cm) long. It had a jointed neck, an eel like tail, a scale less body, and hinged body shields.