Our cursorial dinosaur is Ornithomimus, so B is the correct answer.
我们的游标恐龙是似鸟龙，所以 B 是正确答案。
Ornithomimus
原声例句
阿尔伯塔大学-恐龙古生物学
古生物科普
Deinocheirus' arms would've dwarfed those of Ornithomimus.
Deinocheirus 的手臂会使 Ornithomimus 的手臂相形见绌。
古生物科普
And the biggest Ornithomimus had an overall body length of about 3.8 meters.
而体型最大的似鸟龙全长约3.8米。
古生物科普
Regardless, while Deinocheirus was an ornithomimosaur through and through, it didn't just look like a scaled-up Ornithomimus.
无论如何，虽然恐手龙是彻头彻尾的似鸟龙，但它看起来不仅仅是放大的似鸟龙。
SciSHow 快问快答小科普
And we’ve found a few dinosaur fossils that contain fossilized skin and feathers, like an Ornithomimus fossil discovered in 2009.
我们还发现了一些包含化石皮肤和羽毛的恐龙化石，例如 2009 年发现的似鸟龙化石。
阿尔伯塔大学-恐龙古生物学
Large sauropods had very graviportal limbs, like this Argentinosaurus, while many theropods had legs built for running, like this Ornithomimus.
大型蜥脚类动物的四肢非常重，例如阿根廷龙，而许多兽脚亚目恐龙的腿是为奔跑而设计的，例如似鸟龙。
古生物科普
As early as 1969, paleontologists had noticed that the hands and upper arm bones of Deinocheirus looked a lot like those of Ornithomimus, a dinosaur from the Late Cretaceous of North America.
早在 1969 年，古生物学家就注意到恐手龙的手部和上臂骨骼与北美白垩纪晚期的似鸟龙非常相似。
中文百科
似鸟龙属
似鸟龙属（属名：Ornithomimus）意为「鸟类模仿者」，是种兽脚亚目恐龙，生存于晚白垩纪的北美洲。急速似鸟龙（O. velox）是根据一个脚掌与部份手掌来命名，这些化石发现于马斯垂克阶的丹佛组；但在加拿大发现了更好的化石，包括发现于埃德蒙顿地区的埃德蒙顿似鸟龙（O. edmontonicus），在省立恐龙公园则发现了一个保存极好的天然状态标本（仍不清楚属于哪种）。其他的似鸟龙化石则发现于美国东岸。
英语百科
Ornithomimus 似鸟龙属
Ornithomimus (/ˌɔːrnᵻθəˈmaɪməs, -θoʊ-/; "bird mimic") is a genus of ornithomimid dinosaurs from the Late Cretaceous Period of what is now North America. Ornithomimus was a swift bipedal theropod which fossil evidence indicates was covered in feathers, equipped with a small toothless beak that may indicate an omnivorous diet. It is usually classified into two species: the type species, Ornithomimus velox, and a referred species, Ornithomimus edmontonicus. O. velox was named in 1890 by Othniel Charles Marsh on the basis of a foot and partial hand from the late Maastrichtian-age Denver Formation of Colorado, United States. Another seventeen species have been named since, though most of them have subsequently been assigned to new genera or shown to be not directly related to Ornithomimus velox. The best material of species still considered part of the genus has been found in Alberta, Canada, representing the species O. edmontonicus, known from several skeletons from the early Maastrichtian Horseshoe Canyon Formation. Additional species and specimens from other formations are sometimes classified as Ornithomimus, such as Ornithomimus samueli (alternately classified in the genera Dromiceiomimus or Struthiomimus) from the earlier, Campanian-age Dinosaur Park Formation of Alberta.
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