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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Stegoceras ('horned roof' - Greek stego-/IEI I II?- meaning 'roof' and ceras/I I-I I IC meaning 'horn') is a genus of plant-eating pachycephalosaurid dinosaur that lived in what is now North America during the Late Cretaceous .Stegoceras had an estimated length of up to 2 metres (6.6 ft) and weighed 120-150 lbs. It had a relatively large brain that was encased in a dome of 3 inches (7.6 cm) of thick bone divided into two parts. The dome had a fairly smooth surface, but was irregularly pitted by foramina which gives an entrance to channels within the bone. Stegoceras (at least S. validum) can be disingushed by having a prominent parietosquamosal shelp with open supratemporal fosse, incipient doming of the frontopariental and minute node in clusters on postorbital and squamosals. Stegoceras had rounded eye sockets that faced forward, which suggests had good vision and was capable of binocular vision.

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