brachiopods

例句：

1. 1. The fossils found in the cave are mostly brachiopods.
   洞穴中发现的化石主要是腕足动物。
2. 2. These brachiopods were discovered on a beach near the city.
   这些腕足动物是在城市附近的海滩上发现的。
3. 3. Brachiopods have been used as tools and weapons in ancient civilizations.
   腕足动物在古代文明中被用作工具和武器。