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Brachiosaur is a dinosaur-like Bakugan from Bakugan: Mechtanium Surge.
Brachiosaur resembles a dinosaur from prehistoric times called Sauropods, mainly the Brachiosaurus. Like the Brachiosaurus, Brachiosaur has a long neck and eats plants. Each Brachiosaur has a horn on its head.
A group of Brachiosaur were seen eating plants and relaxing near a lake in Return to New Vestroia.
Brachiosaur, Tuskus, and Ventoraptor were seen in a flashback waving goodbye to Jaakor in the Japanese version of The Prodigal Bakugan.