Kingdom Animalia All animals
Phylum Chordata All vertebrates (plus some minor groups)
Class Reptilia All reptiles
Order Saurischia All lizard-hipped dinosaurs
Sub-Order Theropoda The “beast footed” dinosaurs mainly carnivores
Family Tyrannosauroidea All Tyrannosaurs and close relatives of Tyrannosaurs
Genus Tyrannosaurus The closest relatives of all to Tyrannosaurus rex
Species Tyrannosaurus rex The individual species known as T. rex