Daspletosaurus: Dinosaur Park specimen (FMNH mounted at the Field Museum in Chicago. genus of tyrannosaurid theropod dinosaur that lived in western North America between 77 and 74 million years ago, during the Late Cretaceous Period.
Torvosaurus at Thanksgiving Point 1 Prev Next "savage lizard" Late Jurassic Period (about 150 million years ago) A large meat-eater, Torvosaurus is not as well known as Allosaurus but lived during the same time and was just as deadly. It closely resembles certain dinosaurs from Europe, such as Megalosaurus. Torvosaurus is found in a layer of rock called the Morrison Formation in Colorado and Wyoming.
Herrerasaurus was one of the earliest dinosaurs. All known specimens of this carnivore have been discovered in rocks of late Ladinian age (middle Triassic according to the ICS, dated to million years ago) in northwestern Argentina