Stegoceras, skull (Pachycephalosaurus) Baryonyx Liopleurodon was named by French

Liopleurodon was named by French paleontologist H

lungfishes

4 m) long skull and 68 thin

Thousands of fossils have been found in late Pleistocene tar pits and rocks from both North America (S

although shorter than those of other dromaeosaurs

Stegoceras, skull (Pachycephalosaurus) Baryonyx Liopleurodon was named by FrenchPronounced STEG oh CEER us, Stegoceras (meaning "roofed horn") was a bipedal, herbivorous, dome headed, plant eating dinosaur from the late Cretaceous period, about 76 65 million years ago. This pachycephalosuar was about 7 ft (2 m) long and lived in what is now Alberta, Canada. The type species is P. validum. Stegoceras was named by paleontologist L. Lambe in 1902. It had long been thought that Stegoceras' (and other pachycephalosaurs') thick dome