What were the Largest Dinosaurs Ever?
For many decades, king among the largest dinosaurs known was Brachiosaurus, a large sauropod. This dinosaur reached heights of 15 m (48 ft) and could be as long as 28 m (92 ft). It weighed about 50 tonnes. Based on its huge size, it probably didn’t have any predators. Brachiosaurus is no longer the largest known dinosaur, but it is among the largest dinosaurs known from a complete skeleton. Unlike many other sauropods, Brachiosaurus had a giraffe-like build that would have let it reach the leaves of the tallest trees. Like other sauropods, Brachiosaurus had a barrel-shaped abdomen, erect limbs, and was herbivorous. It would have towered over the largest dinosaurs that were predatory, such as theropods like T. Rex. The length of time it took for a Brachiosaurus to grow to full size would vary depending on whether it was warm or cold-blooded — if it was warm-blooded, it would have taken about 10 years to grow to full size, and if cold-blooded, 100 years. Many scientists believe that din
