The animal's tremendous size and weight prevented it from running at top speeds of 45 mph, like is shown in the blockbuster "Jurassic Park." If T. rex ran at those speeds its leg bones would have ...

In 1993, Steven Spielberg's film Jurassic Park defined dinosaurs for an entire ... which feature heavily in the film, including Tyrannosaurus rex, Velociraptor and Triceratops.