The coastal grasslands of Elysium are home to a rather curious creature.

On the surface,the Durocranius seems to be an analog to Earth's Pachycephalosaurus. However, there are some key differences between the two creatures.
Firstly, instead of a bony dome, the Durocranius possesses a covering of hard, thick, leathery scales over a layer of spongy tissue the sole purpose of which is shock absorption. While not as hard as the "bone dome" of the Pachycephalosaurus, this weapon is more than capable of inflicting severe bludgeoning damage.
Secondly, unlike its Earth counterpart, the Durocranius does not have a beak. Instead, this creature has a more, for lack of a better term, mammalian muzzle. Both the nose and lips are somewhat reminiscent of those found in ruminants (a trait not normally found in ornithischian dinosaurs).

While scholars aren't 100% sure how to classify this creature, it is known that members of the Durocranius species usually travel in small herds, led by a dominant male, and consisting of females, their young, and sub-adult males (who, upon reaching maturity, are usually chased off by the alpha male).
These creatures feed primarily on soft leaves and fresh grass and will travel long distances in order to find them. In times of prolonged droughts, they will even travel to the coastline in order to forage for kelp and seaweed that got washed up to the shore.