The secondary palate is thought to have a significant role in the development of warm-blooded animals.

The first creatures with secondary palates are known from the fossil record starting from the mid-Permian.

The presence of a secondary palate in the mouth indicates that Cynognathus would have been able to breathe and swallow simultaneously.

Cynodonts also developed a secondary palate in the roof of the mouth.

Most reptiles lack a secondary palate, meaning that they must hold their breath while swallowing.

As the choanae moved farther back, a secondary palate expanded in front of it.

They also had a very well-developed secondary palate.

As in other advanced therocephalians Ictidodraco has a small secondary palate.

The Procynosuchids had a secondary palate, which allows them to eat food while breathing, just like mammals.

A long secondary palate distinguishes it from other closely related genera such as Belesodon.