An ambitious science-fiction drama about a family that has to travel back in time to the period when dinosaurs ruled the Earth in an effort to save the planet from its demise in the future, "Terra Nova" is executive produced by Steven Spielberg, among others. It was originally expected to premiere this spring but hit some dinosaur bumps along the way. RELATED: Is 'Terra Nova' a dinosaur show? Fox unveils prime-time schedule Video: Watch a sneak preview of 'Terra Nova' -- Joy Press Photo: James O'Mara in "Terra Nova."
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