Sinosauropteryx
"Sinosauropteryx" was a small theropod with an unusually long tail and short arms. The longest known specimen reaches up to in length, with an estimated weight of It was a close relative of the similar but older genus "Compsognathus", both genera belonging to the family Compsognathidae. Only one species of "Sinosauropteryx" has been named: "S. prima", meaning "first" in reference to its status as the first feathered non-avialian dinosaur species discovered. Three specimens have been described. The third specimen previously assigned to this genus represents either a second, as-yet unnamed species or a distinct, related genus.
Museum of the Rockies
Apart from housing one of the largest collections of dinosaur fossils in the world and the largest in the United States, the museum is also home to one of the world's largest "Tyrannosaurus" skulls (MOR 008) – narrowly surpassing that of the Chicago Field Museum's specimen, Sue. The museum's Siebel Dinosaur Complex, designed by curator Horner, is home to one of the first identified female dinosaurs, an ovulating "T. rex". Curator Horner, who served as an adviser to the "Jurassic Park" films, was one of the lead scientists involved in the 2005 discovery of soft tissue remains in the thigh bone of a "Tyrannosaurus", which were later brought to the museum. The museum has also been involved in a number of other finds, including a baby "Triceratops" in Jordan, Montana, in 2006, and "Yoshi's Trike" (MOR 3027), a large "Triceratops" specimen with 125 cm long horns, discovered in 2010.