The Stegosaurus lived in the area we now know as Colorado one hundred and fifty million years ago during the Mesozoic era. It is believed that a typical Stegosaurus weighed ten tons though its brain weighed only two and one-half ounces. There are only six skeletons of the Stegosaurus on public display in the United States, one of which may be viewed at the Denver Museum of Nature and Science. This skeleton was discovered by a teacher and students from Canon City High School.
The Stegosaurus was designated as the official state fossil on April 28, 1982 by executive order of Governor Richard D. Lamm.
Stegosaurus mother and child fossil skeletons.
T-Rex and Stegosaurus.