We've got little seashells and things like bivalves and brachypods.

我们有小的和双类、腕足类等东西。

One hundred million years later, the warm, shallow seas were packed with tiny plants and animals — essentially, hors d'oeuvres for a plethora of bigger creatures like trilobites, conodonts, brachiopods, and corals.

一千万年之后，温暖的浅充满了微小的物和动物——基本上是大量大型生物的胃菜，如同三叶虫，牙形虫，腕足类和珊瑚。

Scientists began to realize that this pattern  of change was also replicated in other small, specialized marine creatures of the Silurian, like  the eel-like conodonts and clam-like brachiopods.

科始意识到，这种变化模式也在志留纪其他小型特化的洋生物中重现，比如鳗鱼状的牙形石和蛤蜊状的腕足类。