Time is relative to our position in space right? So, very far away, in a seperate galaxy, there would be other life forms (if there are any which I am quite confident there would be) who have existed longer than us in our time, yet, are still in the very early stages of evolving. Problem being, we can't prove this because even if we did find life in another galaxy with a different time perception to us, we would have to get close to it, altering our time perception, therefore it will be like normal.

Shall we discuss the fourth dimension?