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How dinosaurs were able to grow so big

机译:恐龙如何成长如此之大

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摘要

A big pair of bird-like lungs may have helped the largest dinosaurs achieve their astonishing size. The biggest plant-eating sauropods stretched 40 metres from nose to tail, and weighed up to an estimated 100 tonnes, more than 10 times as much as the largest living elephants. How they grew to this tremendous size has remained a mystery, particularly because their small heads, and necks up to 12 metres long, would have limited how efficiently they could eat and breathe. Now Steve Perry and Jonathan Codd from the University of Bonn in Germany say highly efficient bird-like lungs could have helped overcome these limitations.
机译:一对大的鸟状肺可能帮助最大的恐龙达到了惊人的大小。最大的食草蜥脚类动物从鼻子到尾巴伸展了40米,重达100吨,是最大的活象的10倍以上。他们如何成长到如此巨大的规模仍然是一个谜,尤其是因为它们的小头和长达12米的脖子会限制他们吃和呼吸的效率。现在,来自德国波恩大学的史蒂夫·佩里和乔纳森·科德说,高效的鸟状肺本可以帮助克服这些局限性。

著录项

  • 来源
    《New scientist》 |2005年第2523期|p.14-15|共2页
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  • 作者单位
  • 收录信息 美国《科学引文索引》(SCI);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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