Pterygocalyx

例句：

1. 1. The Pterygocalyx is a small bone that helps support the eardrum.
   翼状骨是一种小骨头，有助于支撑耳膜。
2. 2. In some species, the Pterygocalyx can be used as a tool for communication.
   在某些物种中，翼状骨可以用作交流工具。
3. 3. The Pterygocalyx is often found in fossils from ancient animals.
   翼状骨通常在古代动物的化石中发现。