Psittacosaurus sibiricus es una especie extinta de dinosaurio ceratopsiano que vivió durante el período Cretácico temprano

allowing it to feed on large prey

Snout-tail length 287 mm

Fossils of Leptictidium auderiense come primarily from Middle Eocene sites in Europe

possibly ambushing large prey

Dracorex hogwartsia Sphenacodon Psittacosaurus sibiricus es una especieDracorex hogwartsia was a pachycephalosaurid dinosaur that lived during the Late Cretaceous , approximately 66 million years ago , in what is now North America. Its fossil remains were discovered in the Hell Creek Formation, in South Dakota (United States), and described in 2006. The generic name, Dracorex , means "dragon king", while the epithet hogwartsia is a tribute to the fictional wizarding school in the Harry Potter universe, due to its