The sauropod, Argentinosaurus huinculensis, is believed to be the largest dinosaur that ever lived.
It was originally believed that sauropods were aquatic dinosaurs because of their long necks and nostrils on top of their heads.
Some sauropods may have moved in groups of 20-30.
Sauropods could double their birth weight in just 5 days, and they grew to be 10,000 times heavier by the age of 30.
Like modern birds and elephants, sauropods migrated seasonally over hundreds of miles.