Brachiosaurus is a sauropod dinosaur from the Jurassic Period with long front arms. It was 15 metres tall and weighed between 35 and 50 tonnes.


Brachiosaurus is one of the biggest, tallest, heaviest and longest known sauropods, although its tail was relatively short when compared with others in this group of diverse plant eaters. They were the Giraffe of the Jurassic, using their long necks to eat from the tree tops.

Voracious meat eaters like Allosaurus probably preyed upon young or sick Brachiosaurus individuals, but carnivores might have steered clear of adults, due to their intimidating size. Additionally, this dinosaur probably traveled in small herds, gaining protection in numbers.


Wikipedia has a more detailed and comprehensive article on Brachiosaurus!