T. rex charges through Sculpture Hall as it makes its way to the museum entrance.

In addition to escaping from the hall, the new T. rex has broken away from tradition. This replica, one of the most complete skeletons ever found, has shattered scientific convention by assuming a revolutionary pose. Unlike the Museum's other rex specimen, which looms upright over Dinosaur Hall, this one is structured in a more life-like position, as if confronting prey or another marauding Tyrannosaur. Long a favorite of museum visitors, the Dinosaur Hall rex is depicted at rest in a vertical position rather than in action. Tempers are sure to flare as the rexes vie for dinophiles' attention on their opposing turfs.

The Tyrant Kings of the Lizards last toured the Earth 65 to 67 million years ago during the late Cretaceous period. Their absence from the public eye has been attributed to everything from asteroids to poisonous gas. Like most legends of rock, rumors of a reunion dog the terrible twosome. The most likely forum will be the forthcoming renovated Dinosaur Hall at Carnegie Museum of Natural History.