Allosaurus fragilis

Allosaurus fragilis or "different lizard" was the infamous apex predator of the late Jurassic period. This monster reached lengths of approximately 30 feet and reached weights approaching 3500 pounds. Their teeth were serrated and were used to dine on Stegosaurus, Diplodicus, etc. A must have item for dinosaur collectors. Fossil remains in teeth, bones, and claws. All of which are very rare and extremely difficult to locate. These top quality specimens were all legally collected from private lands in the northwestern US. Late Cretaceous, Morrison Fm., 155-145 MYA. Authenticity guaranteed. 

This Jurassic predator is much older than the T. rex. The Tyrannosaurus rex is much closer in age to man than to the Allosaurus.