ediacarian period造句

例句与造句

1. The oldest fossil evidence from that era of such complex life comes from the Lantian formation of the Ediacarian period, at least 580 million years ago.
2. These unusual impressions of previously unknown soft-bodied sea animals on the surfaces of argillites ( mudstone ) included coelenterates and other metazoa of the Ediacarian period, 575 to 560 million years ago.
3. It's difficult to find ediacarian period in a sentence. 用ediacarian period造句挺难的