Stegosaurus is Greek for “roof lizard”, after its bony plates, which make it one of the most recognizable dinosaurs in popular culture.
Stegosaurus had a very small brain in proportion to its body.
Stegosaurus is one of the few checked dinosaurs, allowing it to thoroughly chew its food.
The most compleat juvenile Stegosaurus was found in the Carnegie Quarry.
Stegosaurus ungulatus is a species of ornithischian dinosaur from the Late Jurassic of North America, found in the Morrison Formation. One of the most common dinosaurs from the Carnegie Quarry, its bones can be viewed on the modern quarry wall. Stegosaurus was a quadrupedal, herbivorous dinosaur with a series of bony plates running down the length of its vertebral column, with the tip of its tail adorned with bony spikes. The function of these plates has been disputed by paleontologists. Due to the vascular nature of the plates, their function as a thermal regulation mechanism has been suggested. A closely related dinosaur from the Tendagaru Beds of Tanzania named Kentrosaurus, is adorned with bony structures that resemble spikes along the length of its vertebral column, instead of plates. This has led some paleontologists to suggest that these structures evolved for the purpose of sexual display, rather than temperature regulation.
A fairly compleat juvenile Stegosaurus ungulatus specimen was excavated from Carnegie Quarry, and a copy is on display at the Quarry Exhibit Hall. The specimen was described by Peter Galton of the University of Bridgeport.
Specimens of Stegosaurus ungulatus from the Carnegie Quarry:
Berman, D.S. and McIntosh, J.S. 1986. Description of the lower jaw of Stegosaurus (Reptilia, Ornithischia). Annals of the Carnegie Museum of Natural History 55: 29-40.
Galton, P.M. 1982c. Juveniles of the stegosaurian dinosaur Stegosaurus from the Upper Jurassic of North America. Journal of Vertebrate Paleontology 2(1): 47-62. Link to publication