Brachiosaurus(redirected from Brachiosaurus altithorax)
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a genus of reptiles of the suborder Sauropoda of the order Saurischia of dinosaurs. The body measures over 20 m long and the body build resembles that of the giraffe: the forelegs are very long. There are two species. The Brachiosaurus lived in the late Jurassic, inhabiting the shores of large bodies of water and feeding on vegetation. The fossils of Brachiosaurus serve as instructional material. Several whole skeletons have been found in the USA and Africa.