Alamosaurus
Alamosaurus (; meaning "Ojo Alamo lizard") is a genus of titanosaurian sauropod dinosaurs, containing a single known species, Alamosaurus sanjuanensis, from the late Cretaceous Period of what is now southern North America. Isolated vertebrae and limb bones indicate that it reached sizes comparable to "Argentinosaurus" and "Puertasaurus", which would make it the largest dinosaur known from North America. Its fossils have been recovered from a variety of rock formations spanning the Maastrichtian age of the late Cretaceous period. Specimens of a juvenile "Alamosaurus sanjuanensis" have been recovered from only a few meters below the Cretaceous-Paleogene boundary in Texas, making it among the last surviving non-avian dinosaur species.
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.