Rick Jaffa and Amanda Silver will write the Jurassic Park 4 script.

The duo - who were behind Rise Of The Planet Of The Apes - have been hired by Universal to pen the screenplay in the latest instalment of the dinosaur blockbuster.

Steven Spielberg - who helmed the first three movies in the franchise - has already ruled himself out of returning to direct the motion picture, but his production partner Kathleen Kennedy remains involved, and she has always stressed that the script will be the most important element of any potential sequel.

"A great script is what it's gonna take to get a fourth Jurassic Park. We have a very high bar for ourselves because we're just like the audience, we don't wanna make the movie if there's not a reason to make the movie. So we've kind of created the dilemma ourselves because it was never intended to be a franchise, so there's an argument to be made, 'Why are you doing a fourth Jurassic Park?' So we've gotta find a good reason for why we're doing a fourth Jurassic Park and we're in the midst of working on that right now," she said at the back end of last year.

There is no release date yet for Jurassic Park 4.