Protoungulata

例句：

1. 1. The discovery of Protoungulata in the fossil record has shed light on the evolution of our early ancestors.
   在化石记录中发现Protoungulata，揭示了我们早期祖先进化的线索。
2. 2.The study of Protoungulata provides insights into the adaptations that enabled these ancient creatures to survive in their harsh environments.
   研究Protoungulata有助于了解这些古代生物如何适应恶劣环境生存下去。
3. 3.Protoungulata is a group of extinct animals that lived during the Devonian period, which is characterized by the appearance of amphibians and reptiles.
   Protoungulata是一群已灭绝的动物，生活在二叠纪时期，这一时期以两栖动物和爬行动物的出现为特征。