Scientists have unearthed in Argentina the remains of a previously unknown species of meat-eating dinosaur that lived about 70 million years ago that had puny arms and may have used its powerful head to ram its prey.
The fossil skull of the Cretaceous Period dinosaur, named Guemesia ochoai, was discovered in Argentina's northwestern Salta province. The researchers said it likely belongs to a carnivorous group of dinosaurs called abelisaurs, which walked on two legs and possessed only stub-like arms, even shorter than those of North America's Tyrannosaurus rex.
The animal, possibly a juvenile, lived just a few million years before an asteroid impact at what is now Mexico's Yucatan peninsula wiped out about three-quarters of Earth's species including the dinosaurs about 66 millions years ago. Scientists believe abelisaurs roamed what is now Africa, South America and India, and several dozen specimens have previously been dug up in Argentina - nearly all of them in southern Patagonia, far from the site of Guemesia's discovery.
"Some scientists think that could mean the animal hunted its prey by charging them with its head," Agnolin added.
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