Board Thread:Naruto Discussions/@comment-3232093-20140617193601/@comment-28861328-20140818200252

Elveonora wrote: Just because Sharingan evolves into tomoe-less Rinnegan doesn't mean it does into Kaguya's. Unless proven otherwise, Rinnegan came first, not Sharingan

Wrong, they appeared at the same time. Kaguya's Rinnegan has been called both the Sharingan and Rinnegan, not to mention possessing the Sharingan's power.