Nearly all of the dicynodont synapsids went extinct.

几乎所有的双齿兽突弓动物都灭绝了。

Meanwhile, dicynodonts were herbivores, too, but they didn’t have teeth.

同时，二齿兽也是草食动物， 但它们没有牙齿。

And the dicynodonts, the rhynchosaurs and many of the early crurotarsans soon went extinct.

而二 齿兽类、鼻龙类和许多早期的克鲁龙类很快就灭绝了。

In fact, the dicynodonts became the most common group of land vertebrates during the Triassic.

事实上，二齿兽类成为三叠纪最常见 的陆地脊椎动物群。

But, in spite of how well specialized teeth worked for herbivory, plant-eating would actually lead to the loss of teeth in another vertebrate group: the weird mammal relatives known as dicynodonts.

但是，尽管专门的牙齿对食草动物有多么有效，但食草实际上会导致另一种脊椎动物群体的牙齿脱落：被称为二齿兽类的奇怪哺乳动物亲属。