Noun:
-
from 544 million to about 500 million years ago; marine invertebrates
- This is the first time in the study and mapping of the Cambrian in South China.
这种定量的岩相古地理图在中国南方寒武纪还是首次出现。
- Internal genetic factors were also crucial in the Cambrian Explosion.
内部遗传因素是还关键的在寒武纪爆炸。
