Tetrapods are more complex than non-tetrapods. Tetrapods are more evolved than non-tetrapods. ... Origin of whales: In the previous level, you looked at the transition from water to land and the evolution of tetrapods. Several groups of tetrapods went on to make the reverse trip—they headed back to the water.

What is an accurate way to describe tetrapods?

The word "tetrapod" means "four feet" and includes all species alive today that have four feet — but this group also includes many animals that don't have four feet. ... So, for example, the ichthyosaur, an extinct swimming reptile, is a tetrapod even though it did not use its limbs to walk on land.

Are tetrapods more closely related to each other than to non-tetrapods?

Tetrapods form a clade. ... Tetrapods are more closely related to each other than to non-tetrapods.