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
Jurassic Park (film) to wrestle with his fascination with dinosaurs and cloning until he began writing the novel "Jurassic Park". Before its publication, Steven Spielberg learned of the novel in October 1989, while he was discussing a screenplay with Crichton that would become the television series "ER". Spielberg recognized what really fascinated him about "Jurassic Park" was it was "a really credible look at how dinosaurs might someday be brought back alongside modern mankind", going beyond a simple monster movie. Before the book was published, Crichton had demanded a non-negotiable fee of $1.5 million for the film rights and a substantial percentage of