Stegoceras was a small pachycephalosaurid in Dinosaur Simulator. The name Stegoceras means "roof horn." Although the Stegoceras looks like an omnivore, it is, in fact, a herbivore, and related to the Pachycephalosaurus. The Stegoceras is currently one of the smallest animals in the game and the 1st place being Arizonasaurus.
It is orange with a brown and pale yellow plate on its head representing the dome-like skull of pachycephalosauridae. It has small grey hands, feet, and a really big nose for its size. It has large black eyes and claws.
- There has been clear evidence of its remodel as it can be seen in the trading map, it is currently unknown as to why it hasn't been added in the game yet. It was months since the remodel was shown, yet no remodel has been placed in the game yet.
The Thanksgiving skin for the Stegoceras, with a better walking animation and attack animation. It is also oddly a carnivore.
It is brown in color, dressed in a black and white pilgrim outfit and black hat pilgrim hat. On the tip of its tail, it holds a sauce boat with gravy in it.
- It is speculated that it is a carnivore since it relates to the Thanksgiving turkey, which involves meat.
The Christmas Stegoceras is the same brown in color as the Thanksgiving Stegoceras although it seems to wear a green and red christmas elf outfit.
It has candy cane warm leggings that are white and red in color, with green elf shoes and a red collar. It wears a green and red striped elf hat with a yellow ball on top of which the hat resembles a Christmas tree.