Dinosaurs run rampant in a secluded continent and in the Solorian Woods.
Tyrannosaurs were the killing machines: these huge, powerful carnivores were all legs, trunk and teeth, and they preyed relentlessly on smaller, herbivorous dinosaurs (not to mention other theropods). The most famous tyrannosaur was Tyrannosaurus Rex, though less well-known genera (such as Albertosaurus and Daspletosaurus) were equally deadly. Technically, tyrannosaurs were theropods, placing them in the same larger group as dino-birds and raptors.
Sauropods were the true giants of the dinosaur family, some species attaining lengths of over 100 feet and weights of over 100 tons. Most sauropods were characterized by their extremely long necks and tails and thick, squat bodies; they were the dominant herbivores of the Jurassic period, though an armored branch (known as the titanosaurs) flourished, due to solorians farming them for meat and saddle. Among the most well-known sauropods were Brachiosaurus, Apatosaurus and Argentinosaurus.
Among the oddest-looking dinosaurs that ever lived, ceratopsians--"horned faces"--included such familiar dinosaurs as Triceratops and Pentaceratops, and were characterized by their huge, frilled, horned skulls. Most ceratopsians were comparable in size to modern cattle or elephants, but one of the most common genera, Protoceratops, only weighed a few hundred pounds.
Among the most feared dinosaurs, raptors were closely related to modern birds, and counted among the dino-birds listed above. Raptors were distinguished by their bipedal postures, grasping, three-fingered hands, larger-than-average brains, and the signature, curved claws on each of their feet; most of them were also covered with feathers. Among the most famous raptors were Deinonychus, Velociraptor and the giant Utahraptor. Eventually Solorians were able to tame some of them and have been since.
These otherwise gentle herbivores were the Solorian equivalent of Sherman tanks, complete with armor plating, sharp spikes and heavy clubs. Ankylosaurs (which were closely related to stegosaurs) seem to have armament mainly to ward off predators, though it's possible that males fought each other for dominance within the herd.
Among the last--and most numerous--dinosaurs to roam the earth, hadrosaurs (commonly known as duck-billed dinosaurs) were large, oddly shaped, low-slung plant eaters with tough beaks on their snouts for shredding vegetation. Most hadrosaurs are believed to have lived in herds, and some genera (like the North American Maiasaura and Hypacrosaurus) paid especially close attention to their children.
Ornithomimids ("bird mimics") didn't resemble flying birds, but landbound, wingless varieties like modern ostriches and emus. These two-legged dinosaurs were the speed demons ; some genera (like Dromiceiomimus) may have been capable of hitting top speeds of 50 miles per hour. Oddly, ornithomimids were among the few theropods to have omnivorous diets, feasting on meat and vegetation with equal gusto.
Ornithopods--small- to medium-sized, mostly bipedal herbivores--were among the most common dinosaurs, roaming the plains and woodlands in vast herds. By an accident of history, ornithopods like Iguanodon and Mantellisaurus were among the first dinosaurs ever to be excavated, reconstructed and named, putting this dinosaur family at the center of innumerable disputes. Technically, the ornithopods include another type of dinosaur, the hadrosaurs.