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Giganotosaurus may have been the largest and most massive predatory dinosaur that ever lived. The biggest giganotosaur was a yard longer and a ton heavier than "Sue", the largest known Tyrannosaurus rex. Despite a resemblance to the more famous tyrannosaurs, anatomical features of Giganotosaurus show it was a member of the Allosaurus clan.
Genus Name: Giganotosaurus ("giant southern lizard")
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