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In blocks of arenaceous come off a cliff to the west of Melbourne (Australia), scientists are shortage more than 20 tracks of dinosaurios. They are signs of between ago 115 and 105 million years of three small terpodos, biped and carnivorous animal. The three are of different size (one great, one medium and one small one) and the investigators do not know if they correspond to three different species, because also it could be a male, a female and a young of the same species, that is to say, " a small family of dinosaurios, but this is pure especulacin" , it notices Anthony Martin, paleontologist of the Emory University (the USA), discoverer of the tracks. " These signs provide a direct indicator to us of how these dinosaurios with the polar ecosystems interactuarian during an important time of history geolgica" , the scientist in an official notice of his university explains. Source of the news: : Shortages three signs of polar dinosaurios in Australia