Gennaro's Hail Mary before being killed was an idea Martin Ferrero stole from The Godfather: Part II (1974). Another idea he had that didn't make it in was he wanted Gennaro to spray the T-Rex's face with pepper spray; you can see it hooked to his belt. Steven Spielberg thought it an interesting idea but said no to it.
Dennis Muren doubted a real T-Rex would look like the one in the film. It wouldn't be as aggressive, because when bears fight on their hind legs, they can only do it for 6-7 seconds before collapsing. Dinosaurs that did the same would wear them out.
Any CG shots of the T-Rex were done with wire frames at ILM.
The T-Rex chasing the Jeep was the most difficult scene to animate. Steve 'Spaz' Williams had to do research because there's no frame of reference for a running animal of that size; it took two months to figure out how to get it to run, for instance. He would run the sequence backwards to see all the mistakes. They were also able to use the computer to add little details to authenticate the scene, e.g. the T-Rex running through puddles of water and leaving splashes, etc. The splashing was filmed individually and then the computer added it to the T-Rex's footsteps.
The T-Rex and the car it knocked over were both animated. The scene is shot bare and than the T-Rex and the car were composited in later. It was the same for Gennaro's death. From the rear, its a stand-in, but after the attack its all CGI.
The Raptors about to jump on Grant, Ellie, Lex and Tim, were both CGI. |