DinoZone
English title: DinoZaurs
Japanese title: ダイノゾーン
Alternative titles: Prehistoric Warriors, Dinozaurs: The Series
Type: OVA
Source: Other
Episodes: 5
Status: Finished Airing
Aired: Nov 27, 1998 to Jan 2000
Duration: 20 min per ep
Rating: G - All Ages
Studios: Sunrise
Genres: Adventure, Sci-Fi

It is explained in the story that it has been 1,000,000 years since the Dino Knights had last defeated the Dragozaurs. The Dragozaurs have returned, a boy named Kaito has reawakened them. The battle between the Dino Knights and the Dragozaurs begins once again as the Dino Knights prevent the Dragozaurs from stealing Earth's life force.

(Source: Wikipedia)