Puertasaurus: Argentina's Super-Giant Dinosaur

Puertasaurus is a giant titanosaurian sauropod dinosaur from the Late Cretaceous of Argentina. Only four vertebrae have been discovered, but their massive size suggests that Puertasaurus was as large as, or even larger than, Argentinosaurus. One dorsal vertebra exceeds 1.7 meters in width, making it the widest dinosaur vertebra ever found. The discovery of Puertasaurus further confirms that South America during the Late Cretaceous was a hotspot for the evolution of giant sauropods. Despite the extremely limited fossil material, Puertasaurus remains a key candidate in discussions about the largest dinosaurs. Its existence reminds us that the upper limits of dinosaur size may far exceed our current understanding.