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Struthiomimus sedens dates back to the Late Cretaceous about 65 million years ago having been found in the Hell Creek and Lance Creek Formations of Canada and the United States. About 16 feet long and 4.6 feet tall at the hip, scientists are unsure if this dinosaur was herbivorous, omnivorous, or carnivorous since it displays characteristics that could place it into any one of the groups.

Image taken in the dinosaur exhibit at the Orlando Science Center.