Additionally, Brachiosaurus may have weighed about 62 tons (56 metric tons), according to 2014 study in the journal PLOS Biology. 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.Click to see full answer. Furthermore, what is the largest dinosaur ever found? Argentinosaurus huinculensis Likewise, is T rex bigger than Brachiosaurus? Brachiosaurus – about 85 feet long (26 m), 40 feet tall, and weighed 70-80 tons. 47 feet long (14 m), 8 tons in weight, and 12 feet tall (4 m). Tyrannosaurus rex – found in North America – 40-50 feet long (12-15 m), 6 tons in weight. Keeping this in consideration, what dinosaur is bigger than Brachiosaurus? The bone clearly belonged to a sauropod—a long-necked dinosaur like Brontosaurus, Diplodocus, and Brachiosaurus. Specifically, it was one of the titanosaurs—the last-surviving group of sauropods, and likely the biggest of them. But even known titanosaurs didn’t have thighs that big.Which dinosaur is bigger than argentinosaurus?Bruhathkayosaurus, a dinosaur that may have been as big or even bigger than Argentinosaurus, was only known from limb, hip, and tail elements, and those fossils disappeared (much like the near-mythical dinosaur giant Amphicoelias, estimated to be 190 feet long from a long-lost piece of vertebra).