FROM A TIME THE WORLD FORGOT. 7.80/10 2001-12-20 30 minutes.HDThe incredible story of how mammals took over from the dinosaurs as the largest, fastest and fiercest creatures on Earth. The mammals triumph was a roller coaster ride as they faced one of the most turbulent phases in Earth's history. At a time when birds ate horses, the mammals had to fight for their very survival.Year: 2001Studio: BBC OneCountry: