It’s been 10 years since the last “Jurassic Park” movie hit theaters, but Steven Spielberg and screenwriter Mark Protosevich are now brainstorming a Jurassic Park 4, reports Heat Vision.

Spielberg, who directed the first two films and was an executive producer on the third, has met Protosevich twice to think of a story for a potential fourth film in the franchise, the trade says.

Universal Pictures, which released the trilogy, and Spielberg’s representatives are saying that a writer has not been hired and that the discussions have been “purely exploratory.”

Based on the late Michael Crichton’s books, the first “Jurassic Park” film earned $915 million worldwide, the second $619 million, and the third dropped down to $369 million.

Protosevich’s story and screenwriting credits include Thor, I Am Legend, Poseidon and The Cell.