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Loacted at the Fernbank Museum in Atlanta. The model filled the entire great hall as the tail curved around most of the hall. Argentinosaurus, recently discovered in Argentina, will probably will turn out to be the largest dinosaur yet discovered, larger than Ultrasauros or Seismosaurus. although Seismosaurus will likely continue to hold the record for total length due to its extremely long tail, characteristic of Diplodocidae. The cross section of one vertebra found of Argentinosaurus measures over five and one half feet in height. Evolutionary biologists believe that dinosaurs were able to reach such colossal sizes due to a colossal metabolism. At the height of its adolescence, Argentinosaurus was probably able to gain about 100 pounds a day!