Attack of the Super-Monsters(1977)

Kyouryuu Daisensou Aizenborg

Japan is being besieged by evil Dinosaurs that humanity have long thought extinct, they are back and are creating disaster. To counter the threat, a special team of expert warriors called Aizenborg were created. Lamees and Kamal use their special powers to combine into Super Aizenborg to battle the evil Satola and his Dinosaur army.

(Source: Anime News Network)