...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>American Scientist >The Lifestyles of the Trilobites
【24h】

The Lifestyles of the Trilobites

机译：三叶虫的生活方式

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

If you had been able to scuba dive during the Ordovician Period, some 450 million years ago, you would have seen at once that the seas swarmed with trilobites. A few trilobites were as large as dinner plates, many more were the size of modern shrimp, and yet others were smaller than peas. They lived almost everywhere, from shallow waters to deep environments beyond the reach of light. There were spiny ones like fully laden pincushions and smooth ones looking rather like large pill bugs. Some carried strange colander-like brims, unlike any animal living today. Many had large and obvious eyes; others again were blind.
机译：如果您能够在大约4.5亿年前的奥陶纪时期内进行水肺潜水，那么您会立刻看到海洋中充斥着三叶虫。一些三叶虫的大小和餐盘一样大，更多的是现代虾的大小，还有一些比豌豆小。他们生活在几乎所有地方，从浅水区到光线无法到达的深层环境。有多刺的像是满载的枕形而有光滑的像是大药虫。有些人携带奇怪的漏勺状边缘，与当今生活的任何动物不同。许多人大而明显的眼睛。其他人再次失明。

著录项

  • 来源
    《American Scientist》 |2004年第5期|p.446-453|共8页
  • 作者

    Richard A. Fortey;

  • 作者单位

    Department of Paleontology, The Natural History Museum, Cromwell Road, London, SW7 5BD, United Kingdom;

  • 收录信息 美国《科学引文索引》(SCI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 自然科学总论;
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号