Board Thread:Naruto Discussions/@comment-3568954-20140530034624/@comment-24891350-20140530071504

ItachiWasAHero wrote: No, it was clearly called a rinnegan genjutsu. You forget that the rinnegan is a super powered sharingan basically. That means she either has sharingan and rinnegan, or she just has the One-Eyed Rinnegan.

I agree. The Rinnegan is an evolved form of the Sharingan. However, Kaguya's third eye has to be different from Madara's and Hagoromo's Rinnegan so we can't be sure yet.