Sceletus gurgito replaced it`s ancestor. It is very similar to its ancestor in appearance however, the cell is far from it. Its ancestor lacks a cytoskeleton making it unstable, the Sceletus gurgito however has muscles all over its body, it uses its muscles to engulf swarms of smaller cells. Sceletus gurgito uses its muscles to "flap" its body for locomotion and picks up vibrations in the water via the cell membrane and whenever it senses a swarm of smaller cells it traps them. As it now has muscles of its own, it can fragment at will.