BUENOS AIRES — Scientists have unearthed in Argentina’s Patagonian wilderness fossils of what may be the oldest-known member of the dinosaur group known as titanosaurs that includes the largest land animals in Earth’s history.
Researchers said on Monday the fossils represent a dinosaur species named Ninjatitan zapatai that lived 140 million years ago during the Cretaceous Period. They identified Ninjatitan as a titanosaur, a group of long-necked plant-eating dinosaurs that walked on four pillar-like legs.
The dinosaur’s incomplete skeletal remains were discovered south of the city of Neuquen. The researchers said Ninjatitan demonstrated that the titanosaurs as a group fir…
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