Ceratosaurus nasicornis fossils are rare but instantly recognizable. This large carnivorous dinosaur has a prominent nasal horn with two other horny bumps over both eyes. The name Ceratosaurus actually means “horned lizard.” It grew to lengths of around 25 feet (6-8 meters). Unlike most carnivorous dinosaurs, it had a row of bony armor, called osteoderms, along its back. Ceratosaurus is a much rarer fossil than its famous cousin, Allosaurus.