Extinct animal

Pachycephalosaurus, pak uh SEHF uh luh sawr uhs, was a plant-eating dinosaur that had a remarkably thick skull. The name Pachycephalosaurus comes… See more » Baryonyx, bar ree ON ihks was a large dinosaur that may have eaten mostly fish. It measured over 30 feet (9 meters) long and weighed about 2 tons… See more » Hesperornis, hehs puh RAWR nihs, is the name given to numerous species of diving birds that lived primarily in North America about 70 million to 90… See more »