Largest Dinosaur

[mark]

What was the largest carnivorous dinosaur?

[kelsherr]

A T-Rex? It was darn big in Jurassic Park.

[Henryn]

For years Tyrannosaurus rex has been the undisputed holder of the title biggest meat-eating dinosaur. But last year palaeontologists uncovered the remains of an animal that puts T-rex in its place. The aptly named Giganotosaurus, unearthed in the Patagonian desert. lived about 100 million years ago and was heavier, with slightly shorter legs, than the T-rex with a scissor-like jaw to tear its prey apart.

[thylo]

depending on how specific your answer needs to be the answer will be any one of the many bipedal saurid dinosaurs... in other words T Rex and its look alikes. the elasmosaurids, though quite large as well, were actually marine reptiles and not dinosaurs at all so they will not count.