Until recently Brachiosaurus was the largest known dinosaur, and made famous by the movie " Jurassic Park ". It is very tall (40 feet!) and very heavy - more than 12 elephants! Unlike most of the other long-necked dinosaurs, Brachiosaurus was specifically designed to reach high into treetops to gather its meals. It had front legs that were longer than its hind legs which pointed its long neck upward. It had a shorter tail than most other big long-necked dinosaurs.

Brachiosaurus, like other sauropods, seemed to have every adaptation needed for continuous eating, including having nostrils on the top of its head, so breathing would not interfere with eating. In order to facilitate the processing of food, which it could not chew with its teeth, Brachiosaurus swallowed stones that the dinosaur kept in its gizzard similar to that found in a chicken. The tough plant fibers would spend time in the gizzard stewing and being ground up by the stones. It probably traveled in herds, the sheer size of the adults protecting the young from predators. This creature is known from two fairly complete skeletons, one of which is on display in Berlin , Germany and the other in Chicago , USA .

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