Dunkleosteus, model Dimetrodon hook-tipped beak

hook-tipped beak

Fossil Frog

allowing for the length of the dentary to be known (5

it is based on fossils that are difficult to distinguish from other Paleogene alligatorids

Pterichthyodes had heavily armored heads and fore bodies

Dunkleosteus, model Dimetrodon hook-tipped beakDunkleosteus, 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.