Here's one of my favorites so far, stegosaurus! While they were quite massive on Isla Sorna due to their need to survive against giant superpredators like spinosaurus and the seven tyrannosaurs, the Isla Nublar species have remained relatively small in response to the lack of large carnivores - only the deadly baryonyx and tyrannosaur are large enough to bother engaging this herbivore. Nublar's stegosaurs tend to be solitary, though can occasionally live in small groups or with their young. Males will have a more bluish-coloring with brighter plates, while juveniles are a more faded blue-green. The parents are very protective of their young, especially due to the fact that they are an easy target for medium predators like velociraptor or herrerasaurus.