Argentinosaurus

If you're looking for the largest dinosaur ever to have walked the planet, you may have come to the right place.

Argentinosaurus was undoubtably huge, around 35m long and weighing in the region of 80 tonnes. Due to its huge size it's likely that it would have only been able to walk at a brisk human pace. Fortunately for the argentinosaurus this was not too much of a hinderance, any predators would likely give it a wide berth due to its size.

Reconstructions of the argentinosaurus are based on the fossiled bones of it's main body and legs. Their head, neck and tail bones were less likely to become fossilised and so far none have been found.