Period: The Brachiosaurus lived in the middle to the late Jurassic period, about 156-145 million years ago.

Habitat: The Brachiosaurus was found in North America and in Africa. The Brachiosaurus lived in a wet, slimy environment.

Diet: The Brachiosaurus was a herbivore (plant eater). It ate the top leaves of trees.

Size: The Brachiosaurus was about 50 feet tall, and 85 feet long.

Description: Brachiosaurus is the largest dinosaur yet found. The Brachiosaurus walked on four legs. Brachiosaurus probably traveled in herds. The Brachiosauarus life span was about 100 years. Its best defense was its size. The Brachiosaurus had a long tail to whip its attackers. Brachiosaurus had 26 teeth on its top jaw and 26 on the bottom for a total of 52 teeth.