kellwasser event造句

例句与造句

1. The beginning of the Famennian is marked by a major extinction event, the Kellwasser Event, and the end with a smaller but still quite severe extinction event, the Hangenberg Event.
2. The "'Late Devonian extinction "'was one of five major extinction events in the history of the Earth's Kellwasser event, occurred at the boundary that marks the beginning of the last phase of the Devonian period, the Famennian faunal stage ( the Frasnian Famennian boundary ), about 375 360 million years ago.
3. It's difficult to find kellwasser event in a sentence. 用kellwasser event造句挺难的