anguifauna

例句：

1. 1. The dinosaurs were the first known animals with a backbone, and they are now extinct.
   恐龙是已知的第一种有脊柱的动物，现在已经灭绝了。
2. 2. The anguifauna of the area is diverse, with many species adapted to the local climate and environment.
   该地区的无脊椎动物多样性丰富，许多物种适应了当地的气候和环境。
3. 3. Researchers have discovered new species of anguifauna in remote areas, expanding our understanding of biodiversity.
   研究人员在偏远地区发现了新的无脊椎动物物种，这扩大了我们对生物多样性的理解。