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Un gruppo di ricercatori dell'Università della North Carolina ha scoperto negli Stati Uniti l'unico dinosauro in grado di terrorizzare i T-rex.
L'enorme carnivoro, vissuto 100 milioni di anni fa, è stato ribattezzato Siats, dal nome di un personaggio cannibale della mitologia della tribù indiana degli Ute. Il fossile ritrovato appartiene a un esemplare giovane alto “solo” 10 metri e aggiunge un importante tassello alla storia della nostra evoluzione.
La mole di questo animale lo poneva al vertice della catena alimentare, tanto da terrorizzare anche il celebre T-Rex.
Il motivo della loro estinzione è ancora tutto da accertare ma solo dopo la loro scomparsa, i Tirannosauri ebbero modo di aumentare di numero e di dimensioni per poi diventare, milioni di anni dopo, l'animale tanto temuto.
ATS/SC
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