时间线
地质时间线：前寒武纪
Geological Timeline: Precambrian Period
- 学科 地球与环境
- 更新 2024-03-04
课件说明
This timeline provides a better understand of what might have happened during the Precambrian portion of the geological timeline (4 billion to 700 million years ago).
Geological Timeline: Precambrian Period
This timeline provides a better understand of what might have happened during the Precambrian portion of the geological timeline (4 billion to 700 million years ago).