Sam played Dr. Alan Grant, a paleontologist asked to inspect the prehistoric theme park, in the first and third Jurassic Park films.

However when producers came to reboot the franchise with last year's (15) follow-up Jurassic World, he wasn't asked to be a part of the new film.

When asked by U.K. chat show host Graham Norton why he hadn't returned for the new movie he said, "I didn't rule it out, they just didn't call me."

Sam says he's not too worried about the snub, but does wonder what became of his character.

"It's fine, I've been doing other things," he adds. "Someone asked me the other day and I said, 'I don't know what's happened to Alan Grant. He could be dead, he could be in therapy or he might be an accountant in Des Moines (Iowa) - nobody knows what's happened to him."

The blockbuster success of Jurassic World, it made $1.67 billion (£1.35 billion) in cinemas worldwide, means that a sequel is on its way, pencilled in for release in 2018.

In a recent interview with Britain's Radio Times magazine Sam said he feels he may be getting a little bit old to return to the franchise.

"I’ve been living with these rumours for, I don’t know how many years now," he said. "But I’m not sure I’m fleet of foot enough to run away from dinosaurs any more."