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Even the early tyrannosaurs had had to do with someone bigger than them, able to terrorize. The confirmation comes from a study published in Nature Communications announces the discovery of a new dinosaur. Baptized Siats (the name of a figure of the cannibal tribal mythology of the Ute, the American Indians who lived in the area where the bones were discovered) the specimen discovered in Utah had to be about ten feet long, lived about 100 million years ago. In spite of there looked like it was bigger than the first specimens of Tyrannosaurus and this on top of the food chain, the family of Carcharodontosauri. Scholars think that only after the extinction of Siat Meekerorum the Tyrannosaurus was able to proliferate and evolve, until you reach the size where it has become the most fearsome carnivores. The discovery of the fossil helps to fill a gap of knowledge along about 60 million years, from the remains of Acrocanthosaurus, another giant predator lived 120 million years ago to the T-Rex of 60 million years ago, there had in fact evidence of the existence of giant predators in North America
(edited by Matteo Marini) -
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