Limusaurus, a small theropod dinosaur, is notable for losing its teeth as it matured. elaborate
Pachyrhinosaurus had a bony boss on its nose instead of a horn like other ceratopsians. elaborate
Heterodontosaurus had different shaped teeth – some like incisors for cropping plants, others like canines for defense, and molars for grinding. This diverse dentition is unique among early ornithischians. elaborate
Dreadnoughtus was so massive that even with a significant portion of its skeleton missing, scientists were still able to estimate its weight. elaborate
Euoplocephalus had a club tail that could swing with enough force to break bones. elaborate