Brachiosaurus was a gigantic dinosaur. Scientists have estimated its weight at more than 28 tons (25 metric tons). Its neck and head stood up more than 40 feet (12 meters) in the air. The most complete skeletons found belong to animals not yet fully grown.

How much does a full grown Brachiosaurus weigh?

Brachiosaurus is estimated to have been between 18 and 21 meters (59 and 69 ft) long; weight estimates range from 28.3 to 58 metric tons (31.2 and 64 short tons). It had a disproportionately long neck, small skull, and large overall size, all of which are typical for sauropods.

Is Brachiosaurus the heaviest dinosaur?

At the time of its discovery in 1903, Brachiosaurus was declared the largest dinosaur ever, but other sauropods are now believed to have been bigger and heavier than Brachiosaurus.