Power Rangers Dino Paladins

65 million years ago, fearless knights of the Saurian Tribe fought against the evil Berserk Tribe, who ruled Earth. However, a gigantic meteor obliviated half of all life in the planet, forcing the Berserk Tribe to fly away to space. The Saurian Tribe remained in the planet and turned the remaining dinosaurs into Armorsaurs before putting them in a deep sleep. 65 million years later, the Berserk Tribe is back to reclaim Earth, but a new generation of knights was chosen to protect the world: the Power Rangers Dino Paladins!

Trivia

 * The series' theme is knights and dinosaurs.