AmargasaurusThe Amargasaurus is an herbivorous dinosaur discovered in South America, where it lived approximately 130 million years ago, during the Early Cretaceous period. This sauropod is distinguished by its double row of spines along its neck and back. Interestingly, these long spines could have been covered in skin, forming a sail, or served as a defense mechanism against predators. This spectacular feature makes the Amargasaurus unique among long necked