Einiosaurus is a medium-sized herbivorous centrosaurine ceratopsian dinosaur from the Upper Cretaceous (Campanian stage) of northwestern Montana. The name means 'buffalo lizard', in a combination of Blackfeet Indian eini and Latinized Ancient Greek sauros; the specific name (procurvicornis) means 'with a forward-curving horn' in Latin. Einiosaurus is a herbivorous dinosaur. In 2010 Gregory S. Paul estimated its body length at 4.5 meters, its weight at 1.3 tonnes. Its snout is narrow and very pointed. It is typically portrayed with a low, strongly forward and downward curving nasal horn that resembles a bottle opener, though this may only occur in some adults. The supraorbital (over-the-eye) horns are low, short and triangular in top view if present at all, as opposed to the chasmosaurines, such as Triceratops, which have prominent supraorbital horns. A pair of large spikes, the third epiparietals, projects backwards from the relatively small frill. Smaller osteoderms adorn the frill edge. The first epiparietals are largely absent.
In Dinosaur PlanetEdit
Einiosaurus are first seen grazing before noticing an approaching young Daspletosaurus, fleeing when the tyrannosaur gave chase. This caused them to mix in with a herd of Maiasaura the Daspletosaurus were hunting. Later that day the herds were attacked by the predators again, with Little Das chasing a pair of Einiosaurus and Buck (the targeted Maiasaura) towards the rest of the pack, but they couldn't get past the Einiosaurus pair before they had managed to get back to the herd and form a defensive barricade, allowing Buck to escape the attack, although the pack eventually gets around it. It is unknown what happened to them once the volcano erupted. They were most likely killed by the pyroclastic flow.