A Primitive Cranial Nerve... Did you know about this?

I can't remember what I was looking for exactly when I stumbled upon a research paper for a cranial nerve that I had absolutely no idea about. For those of you who aren't that medically inclined, here's an intro.

Cranial nerves are nerves that arise from the encephalon. They are responsible for many reflexes and control of many automatic functions, such as gaze coordination, taste etc...
There are 12 cranial nerves (CN), numbered CN I-XII in the order that they enter or arise from the brain. If you're interested, here are the known Cranial Nerves: