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Because of its evolutionary significance and exceptional preservation
" referring to their primitive somewhat reptilian palate
Order: Pterosauria
which means "southern ape of Africa")
Thousands of fossils have been found in late Pleistocene tar pits and rocks from both North America (S
Stegoceras, skull (Pachycephalosaurus) Baryonyx Because of its evolutionary significancePronounced 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