Description
Tyrannosaurus, commonly known as Tyrannosaurus, is an extinct gen of theropod dinosaurs belonging to the family Tyrannosauridae that lived during the upper Maastrichtian, the last stage of the Cretaceo system, about 68-66 million years ago in what is now North America. Tyrannosaurus rex, whose etymology means "king of the tyrant lizards", is one of the most famo species of dinosaurs and the only species of Tyrannosaur if the taxon Tarbosaur bataar is not considered part of the same genus. Tyrannosaur was one of the last non-avian dinosaurs to live to extinction at the Cretaceous-Paleogene boundary 66 million years ago.
