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Researchers have discovered in Argentina's Patagonian skeletal remains of what may be a member of the oldest-known dinosaur group known as titanosaurs that includes the largest land animals in the history of Earth.
The incomplete skeletal remains of the dinosaur were found south of the city of Neuquen. Scientists said the discovery of skeletons, symbolizing a species of dinosaur named Ninja Titan Zapata, reveals that it first appeared longer ago than they initially thought.
Scientists said on Monday, "The skeletons symbolize a dinosaur species named Ninja Titan Zapata that existed during the Cretaceous period, 140 million years ago." Researchers know Ninja titan as a group of long-necked plant-eating dinosaurs that walked on four pillar-like legs (titanosaurs).