Dunkleosteus, model Dimetrodon that is still in business

that is still in business today selling mineral and fossil kits among other scientific equipment to many schools within the USA

in the famous Bolca field

Fossil Frog

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

More complete specimens are known from a fourth

Dunkleosteus, model Dimetrodon that is still in businessDunkleosteus, 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.