Jurassic Park III dinosaur-bird connection, said the feathers quills added to the "Velociraptor" for "Jurassic Park III" "looked like a roadrunner's toupee", but conceded that feathers are difficult subjects for computer animation and speculated that "Jurassic Park IV"'s raptors would have more realistic with plumage. In 2002, Crichton said he had not watched the film. A teaser trailer was released online in September 2000. Universal avoided excessive early marketing to prevent a possible backlash; the studio believed awareness of the film was already sufficient. Marketing began in April 2001, three months before the film's release. The first footage from the film was aired
The Lost World: Jurassic Park (console game) film by Industrial Light & Magic. Creature designs were also based on photographs of dinosaur maquettes that were created by artist Stan Winston for the film. 3D creatures were then created as low polygon models combined with Hall's sketches. The movements of the game's "T. rex", raptor, and "Brachiosaurus" were based on movements featured in the original film, "Jurassic Park". The game's animation team visited the Los Angeles Zoo multiple times and watched nature programs to study the movement of modern animals as research for how to animate other creatures that did not appear in the films. Animator Sunil Thankamuchy