It took experts four years to make the partial sleleton ready for a museum. Jane went on display at Rockford, Illinois in the Burpee Museum of Natural History. Some paleontologists think Jane was a young tyrannosaurid, about 11 years old when she died. Jane is measured 6.5 metres (21.5 ft) long, about half as long as the largest known complete "T. rex" specimen, which is 13 m (42.6 ft) long. Experts think Jane weighed about 680 kg (1,500 lbs) when she was alive. Her large feet and long legs show she could perhaps run as fast as 20–30 miles per hour. Her lower jaw has 17 teeth. Her teeth are curved and serrated.