Pteraiden-Oh (プテライデンオー) is a secondary mecha from the Super Sentai series Zyuden Sentai Kyoryuger (2013). It is the robot of Kyoryu Gold (Utsusemimaru) and is formed from his Zyudenryu No. 6, Pteragordon, a Guardian Beast shaped like a Pteranodon. The "Kaminari Henkei" ("Thunder/Lightning Transformation") in its name refers to the fact that Pteragordon reconfigures into robot form on its own, rather than combining from several Zyudenryu the way the lead mecha Kyoryuzin does. In the U.S. adaptation Power Rangers Dino Charge / Dino Super Charge it corresponds to the Gold Ranger's Ptera Charge Megazord.

In its most frequently seen battle configuration, "Pteraiden-Oh Western," Pteragordon serves as the torso and combines with the Zyudenryu Parasagun (Parasaurolophus, black) and Zakutor (Velociraptor, green) as its arms, wielding the Zakutor Sword and the Parasa Beam Gun. Distinctive features include the chest-mounted Ptera Head cannon (the Pteranodon head) and the forearm-mounted Ptera Cutter blades. A notable detail is the "Deboss mode": in the series Pteragordon was initially controlled by the enemy Deboss Army and turned against the Kyoryugers, which the toy and suit represent with a visor that folds down over the eyes.

The DX toy, "Kaminari Henkei DX Pteraiden-Oh," was released in April 2013 by Bandai Japan (RRP around 6,000 yen). It is made predominantly of plastic (ABS/PVC); the Kyoryuger DX line largely omitted die-cast content. The color scheme is gold and black with blue and silver accents. The box contains the complete Pteragordon (which on its own already forms Pteraiden-Oh) together with the No. 6 Zyudenchi ("Beast Battery"), which also triggers electronic responses on other Kyoryuger toys; the Deboss visor can be displayed on the head. The Western battle mode requires the separately sold DX Zyudenryu Parasagun and Zakutor. A dedicated U.S. release later appeared from Bandai America as the Ptera Charge Megazord within the Dino Charge line; the item described here is the Japanese Bandai DX edition.