Traces of the four-legged “first giant” … appear in Argentina

Scientists have discovered the remains of the oldest known giant dinosaur, in northwest Argentina, which is a vegetarian dinosaur with four legs, a medium-length neck and a long tail.

The researchers said that the length of the dinosaur, which was called Engentia Braima meaning “the first giant”, reached ten meters and weighed about ten tons, and lived about 210 million years ago during the Triassic period.

The Ingenetia is a long-standing member of a group of dinosaurs known as the Robopods, which then included the largest land creatures that lived on Earth, including Argentinosaurus, Dreadnoughtus and Patagottians that lived in the Patagonia region.

“We see in Ingenetia Prima an origin of gigantism and the first steps towards the emergence of sauropod dinosaurs at weights of up to 70 tons, more than a hundred million years later,” said paleontologist Cecilia Appaldei of the National University of San Juan in Argentina and lead researcher of the study published Monday in the journal Nature Ecology and Evolution. Like the one that lived in Patagonia. “

The angentia’s legs were not vertical in shape like the later sauropods, and their necks were shorter. The sauropods are among the longest-necked animals, compared to their body length.

Scientists believe that dinosaurs first appeared in the early Triassic period, about 230 million years ago. The first dinosaurs were small, unlike the giant dinosaurs that lived in the later Jurassic and Cretaceous periods. Scientists initially thought that the giant dinosaurs appeared approximately 180 million years ago.

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Appalditi said the ingentia was not only the largest dinosaur but the largest land animal ever at this time. It was at least twice as large as the rest of the plant-dwelling creatures that lived with it in warm savannahs. At the time, they were not the largest predators of the dinosaurs but rather large, wild creatures that looked like crocodiles.

Scientists have identified important features associated with gigantism in the dinosaur ingentia. He had a bird-like breathing system linked to having air bags inside the body that provided him with a supply of fresh air and kept his body cool despite his large size.

Scientists discovered an ingentia dinosaur in the province of San Juan, Argentina, and identified it from two incomplete skeletons.

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