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Dinosaurs take to the air

机译:恐龙飞向空中

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摘要

Three questions lie at the heart of the debate about the evolution of birds: the origin of the group itself, the origin of feathers and the origin of flight. Progress in reconstructing the evolutionary history of dinosaurs has established a well-corroborated answer to the first question. Birds are a lineage of dinosaurs, and are most closely related to dromaeosaurs and troodontids, both of which belong to a group of bipedal, carnivorous dinosaurs called theropods. Since 1997, new fossils and insights from developmental biology have also supported a coherent solution to the second question. Feathers evolved in theropod dinosaurs before the origin of birds or flight through a series of developmental novelties. Now (page 335 of this issue), Xu et al. report spectacular 124-128-million-year-old fossils from Liaoning, China, that promise to revolutionize discussion of the last question―how did avian flight evolve?
机译:关于鸟类进化的辩论的核心是三个问题:群体本身的起源,羽毛的起源和飞行的起源。重建恐龙进化史的进展为第一个问题提供了确凿的答案。鸟类是恐龙的血统,并且与Dromaeosaurs和troodontids最为相关,它们都属于称为pedropods的两足,食肉恐龙。自1997年以来,新的化石和来自发育生物学的见解也支持了对第二个问题的连贯解决方案。羽毛是在兽脚亚目恐龙中进化的,它是鸟类起源或通过一系列发展新奇而飞行之前的进化。现在(本期第335页),Xu等。报告了来自中国辽宁的124-128百万年前的壮观的化石,它们有望彻底改变最后一个问题的讨论-禽类飞行是如何进化的?

著录项

  • 来源
    《Nature》 |2003年第6921期|p.323-324|共2页
  • 作者

    Richard O. Prum;

  • 作者单位

    Department of Ecology and Evolutionary Biology, and the Natural History Museum and Biodiversity Research Center, University of Kansas, Lawrence, Kansas 66045, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

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