Eric Walker added Tyrannosaurus - Wikipedia to Tyrannosaurus and Tyrannosaurus rex
Eric Walker added Tyrannosaurus rex and Tyrannosaurus - Wikipedia to Tyrannosaurus, and added Tyrannosaurus to Tyrannosaurinae
Eric Walker added Tyrannosaurus to Tyrannosaurinae, and added Tyrannosaurinae to Tyrannosauridae
Eric Walker added a number of links to Tyrannosaurus rex, and added Tyrannosaurus rex to Tyrannosaurus