有些恐龙被认为可能比疾走龙跑得更快，比如长得像鸵鸟的似鸟龙(Ornithomimids)、似鸡龙(Gallimumus)、似鸵鸟龙(Struthiomimus)、似鸸鹋龙(Dromiceiomimus)以及棱齿龙(Hypsilophodon)。
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The fossilized remains of the ostrich-like ornithomimids are rare evidence of social behavior, say scientists from Montana State University and elsewhere.
蒙大拿州立大学的科学家认为这是罕见的似鸟龙——长得像鸵鸟——社会行为的证据。
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The Ornithomimids - from the Latin for "bird mimics" - superficially resembled modern-day ostriches, with a toothless beak, large eyes and long legs, but they also had a long, thick tail.
BBC: Dinosaur feathers 'developed for courtship'
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