Mainly its size. A smack from that tail could have crippled a Tyrannosaur, and if Brachy managed to get any important part of an attacker between his foot and the ground, well, think of a tiger under an elephant.
Stegosaurus is an ornithischian dinosaur, belonging to the order Thyreophora. Tyrannosaurus is a tyrannosaurid theropod dinosaur. Brachiosaurus is a sauropod dinosaur.
It was the Brachiosaurus
The dinosaur fossil that was found in Tanzania, is a Brachiosaurus.
Brachiosaurus is a dinosaur. It begins with the letter B.
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A brachiosaurus, pterodactyls, and triceratops.
The Brachiosaurus footprint is relatively small for a dinosaur. Looking more like a giraffe than a dinosaur, specimens have been found in North America.
Brachiosaurus, Brontosaurus, ... these are the only ones i can think of right now ")
brachiosaurs
The Brachiosaurus was a sauropod dinosaur, one of the largest ever in fact.You can find more at Wikipedia.http://en.wikipedia.org/wiki/Brachiosaurus
Brachiosaurus translates as "arm reptile"