The Cephalo Prehistoric Zord is Yellow Ranger's additional Zord. This Zord was based on between the Pachycephalosaurus, the Submarine and the Rocket but it can change from submarine to rocket and from rocket to submarine. Cephalo Zord fires torpedo and fire power at the enemies. The Cephalo Zord forms left arm of Engine Prehistoric Megazord and revolver for Engine Ultrazord.