Along with this secondary palate, some late therapsids developed features known as nasal turbinates, which are specialized structures in the nose that help animals take in oxygen more effectively.

除了这种次级上颚， 一些晚期兽孔目动物还发展出了被称为鼻甲骨的特征，这是鼻子中的特殊结构， 可以帮助动物更有效地吸收氧气。