Tyrannosaurus RexSchleich 14525 Tyrannosaurus Rex. The thirteen metre long Tyrannosaurus Rex was a two legged predatory dinosaur. With its powerful head and nearly 20 centimetre long teeth, this dinosaur was an extremely impressive contemporary. Fun Fact If this powerful predatory dinosaur lost one of its dagger like teeth, a new one would grow back within a matter of weeks. Although the Tyrannosaurus Rex looked quite threatening, it could hardly use its front legs