![]() ![]() It was among the last non- avian dinosaurs to live prior to the K-T mass extinction event.Ī rather recent, although controversial study indicates that there could be three differentiated and varied species of Tyrannosaurus and proposed two new species: Tyrannosaurus imperator and Tyrannosaurus regina. However, one specimen, known as "Scotty", measured 12.4 meters (40.6 feet) in length, stood 3.9 meters at the hips, and weighed nearly 11 tons.įossils have been uncovered in North and South Dakota, Texas, Montana, Colorado, Wyoming, and Saskatchewan within a depositional formation known as the "Hell Creek". There are other specimens estimated to be larger than Sue but this information is debated. rex was nicknamed "Sue" (located at Chicago's Field Museum of Natural History, which is roughly 90% complete), measuring approximately 12.3+ meters (40+ feet) in length, around 3.9 meters high at the hips, and 10 tonnes in weight, making it amongst the biggest terrestrial carnivores & biggest theropods that ever existed. rex, is a species of tyrannosaurian theropod dinosaur that flourished during the Maastrichtian age of the Late Cretaceous epoch, 68-66 million years ago.Įver since its discovery, Tyrannosaurus has become one of if not the most popular of its kind as over 50 individuals of this taxon have been unearthed. ![]() Tyrannosaurus rex (Greek for "tyrant lizard king"), or more commonly abbreviated as T. Dinotyrannus megagracilis (Olshevsky, 1995)Īpproximate distribution range of Tyrannosaurus rex.Nanotyrannus lancensis? (Gilmore, 1946).Albertosaurus lancensis? (Gilmore, 1946).Tyrannosaurus imperiosus? (Osborn, 1905).Dynamosaurus imperiosus? (Osborn, 1905).Nanotyrannus ( Bakker, Williams and Currie, 1988).Reconstruction of Tyrannosaurus by Mark Witton ![]()
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