Dinozaurs

Dinozaurs (ダイノゾーズ, Dainozōzu) or DinoZone in the dubbed version, is a Japanese toyline or transformable mecha dinosaurs created by Bandai in 1998, to compete with the rising popularity of Takara and Hasbro's Transformers: Beast Wars toyline. Two media adaptations were animated by Sunrise, a 5-episode 3DCGI OVA series ran from November 27, 1998 to January 2000, and a 26-episode anime series that aired on Fox Kids from July to December 2000, while airing in Japan through limited broadcasts such as Fuji TV.

Plot
65,000,000 years ago, the Dino Knights once defeated the Dragozaurs, aliens who came from space who wanted to absorb the Earth's life force. The Dino Knights were created when the planet converted a select number of dinosaurs and other type of prehistoric animals to help defend it. But when the Dragozaurs starts to resurface in the present day to collect the planet's life force, the Dino Knights reawakened from their long slumber in order to stop them.