Patagotitan was discovered in Patagonia, Argentina, in 2014 when a rancher reported a fossilized leg sticking out of his land. When paleontologists got there, they found six different Patagotitan skeletons together - over 200 bones from one of the biggest animals ever found.
A grown Patagotitan was about 122 feet from nose to tail and weighed around 70 tons - the weight of 14 African elephants standing on the same scale. Its thigh bone alone is over 8 feet long, almost as tall as some basketball players.
It belonged to a group called titanosaurs - the absolute heavyweights of the dinosaur family - which spread across South America, Africa, India and Australia during the Cretaceous period.
