jason o'mara terra novaLife on Mars star Jason O'Mara is traveling back in time again for a lead role in Steven Spielberg's upcoming Fox series Terra Nova.

According to Deadline, O'Mara will play Jim Shannon, the head of a family that escapes the bleak year of 2149 by traveling back to the prehistoric era. The family joins a group of people hoping to build a shinier, happier civilization and stop the dark and dangerous future from happening.

The big-budget action series will reunite Spielberg with some of his biggest stars; dinosaurs! The project will also see the Oscar winning filmmaker working with a very nerd-friendly team of writers and producers, including 24 and Star Trek scribe Brannon Braga, Lost's David Fury and The Pacific and Rise of the Apes producer Peter Chernin.

Filming on the pilot starts this summer for a mid-season premiere.