"It was 1992 and nobody knew if the CGI was going to work, much less be able to make a dinosaur swim," writer David Koepp said

Screenwriter David Koepp, who co-wrote the original "Jurassic Park," talks EW through pulling from lost material.

Get all the news you need in your inbox each morning. "I had no idea," he says. Join our Watch Party! Sign up to receive USA TODAY's movie and TV recommendations right in your inbox The scene is straight out of Michael Crichton's 1990 "Jurassic Park" novel,