Small, about 5 kilos in weight and slightly more than 1.2 meters high, fast and carnivore, the Eodromaeus or "dawn runner" lived 230 million years ago in Argentina. Scientists have discovered the dinosaur believe could be the ancestor of Tyrannosaurus Rex voracious. A group of paleontologists found the first remains of this creature in 1996 in the Valley of the Moon in the nororeste of Argentina, as explained in an article published in the journal Science. Finally, 14 years later, they have gotten back together.
The animal belongs to the Late Triassic and, say the researchers, is one of the oldest dinosaurs found so far, the evolution in the family of theropods, is likely to achieve fearsome predators like Tyrannosaurus rex and Velociraptor.
Your name: dawn runner, "he said in the BBC Science, Neil Bowdler, refers to the appearance of this specimen is at" the dawn of the emergence of dinosaurs. "
"Very close to the source"
"It is very near the origin of dinosaurs," said the scientific team leader conducted the discovery, Paul Sereno of the University of Chicago.
"It was a two-legged animal and small. It was quick, we know from the small size of their limbs, and had capable hands to grasp things with claws very powerful, "said Sereno.
" It was a predator, we know from his hands, but especially for his long and curved teeth. It was a carnivore specialist and in many ways is an animal very close to the first carnivore, the first line of theropods that eventually evolve and acquire such enormous size as the Tyrannosaurus Rex, "said the expert.
fossilized bones Eodromaeus appeared on some rocks near the Andes. Most were covered with deposits of iron and has required painstaking work to rebuild and reconstruct molds complete skeleton. Bowdler
As explained at the time in which this creature lived, the dinosaurs were not nowhere near the dominant beings. "At that time, creatures resembling crocodiles could swallow a mouthful," he said.
However, he added, "A coincidence, perhaps an environmental catastrophe, say the researchers, paved the way for animals like these and their descendants took control." (BBC)
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