synapsids

synapsids

美 　英

• 网络弓类；下孔型

例句

But the claim that this trait may have helped archosaurs edge out the synapsids is "highly speculative, " she said.

但是她说，认为这个特性可能使祖龙优胜于单孔类动物的说法，很大程度上只是猜测。

Before the extinction, synapsids, the ancestors to modern mammals, were the dominant group.

单孔类动物是现代哺乳类动物的祖先。在大灭绝前，它们是占统治地位的族群。