Argentinosaurus is a genus of giant sauropod dinosaurs that lived in the Late Cretaceous in Argentina. It was a titanosaur, a clade with some of the largest dinosaurs ever though it is hard to tell due to fragmentary remains. It was the largest dinosaur in its area and it is only surpassed in size by Patagotitan, Alamosaurus, Puertasaurus, Bruhathkayosaurus, and Maraapunisaurus. It probably swallowed gastroliths to digest its food. It could rear up on 2 legs to look way bigger than it is to scare off predators at the same place and time as it such as Giganotosaurus and Mapusaurus. The newborn Argentinosaurs are estimated at only 3 ft long while an adult could grow to 114 ft and 81 tons. They lived with the rebbachisaurids like Choconsaurus, Limaysaurus, and Cathartesaura, theropods such as Mapusaurus, Skorpiovenator, Giganotosaurus, Tralkasaurus, Huinculsaurus, Overoraptor, Aoniraptor, and Gualicho.
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