1. a large sauropod dinosaur of the Jurassic period, characterized by front legs longer than hind legs and a long neck
Usage: paleontology; often capitalized when referring to the genus

Examples

• The brachiosaurus was one of the largest land animals ever to exist.
• Brachiosaurus fossils have been found in North America and Africa.
• The long neck of a brachiosaurus allowed it to reach vegetation high in trees.
• Scientists estimate that a brachiosaurus could weigh up to 80 tons.
• Children were fascinated by the brachiosaurus skeleton displayed at the natural history museum.