Limblesses

Limbless are creatures of the kingdom Carpozoa descended from the Sanddigging Serpentsaur. Limblesses in general bear several similarities to Snakes on Earth.

Anatomy
They also evolved two backside spikes for better movement and gaining momentum when jumping. Finally they evolved a weapon most suiting against their main prey, a tail flail. Their whole preying strategy became based on it as they caught their prey with the mouth, turned over to the side and then smash it down with a few hits using the tail.

Locomotion
The original limbless moved by hopping, waving their tails and bodies to push forward. Their descendant, the Springtrap Limbless, developed a more serpentine movement, which all subsequent species has used.

Types of Limblesses
Seaswimmers - A species of limbless that evolved into the ocean, becoming most marine.