Animatronic Tyrannosaurus and visitors at the dinosaurs exhibition room at the Natural History Museum in London, England, United Kingdom. The T. rex is a genus of coelurosaurian theropod dinosaur. The museum exhibits a vast range of specimens from various segments of natural history. The museum is home to life and earth science specimens comprising some 80 million items within five main collections: botany, entomology, mineralogy, paleontology and zoology. The museum is a centre of research specialising in taxonomy, identification and conservation.