| 词条 | Lochkovian | |||||||||||||||||
| 释义 |
The Lochkovian is one of three faunal stages in the Early Devonian epoch. It lasted from 416 ± 2.8 million years ago to 411.2 ± 2.8 million years ago. It marked the beginning of the Devonian Period, and was followed by the Pragian stage. In North America the Lochkovian Stage is represented by Gedinnian or Helderbergian time. PalaeontologyAgnathans
References{{Geological history|p|p}}{{geochronology-stub}} 1 : Early Devonian |
|||||||||||||||||
| 随便看 |
|
|||||||||||||||||
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。