Tyrannosaurus, upper Cretaceous carnivorous dinosaur (second communication) Author Osborn, H. F. text Bulletin of the American Museum of Natural History 1906 22 281 298 journal article 10.5281/zenodo.3239318 933de798-383e-46d7-ac1c-2607a36d7f10 3239318 Genus Tyrannosaurus Osborn . Syn. Dynamosaurus OSBORN .