archaeocyathids

例句：

1. 1. This discovery sheds new light on the origins of life in the ocean.
   这一发现为海洋生命的起源提供了新的见解。
2. 2. The archaeocyathids are among the oldest known marine creatures.
   这些古生代海生无脊椎动物是已知的最古老的海洋生物之一。
3. 3.The study of these animals has helped us understand the complex ecosystems that existed during the Paleozoic era.
   对这些动物的研究帮助我们理解了古生代时期的复杂生态系统。