At some point a human form of self awareness could have formed, but I think the key is not triggered by physiology alone. Feral humans exist and it's important to understand that there is an observed malleability of the mind which tapers with age. Such individuals have been found and in some cases rehabilitated into what we consider functioning, self-aware, cognitively capable humans.
https://en.wikipedia.org/wiki/Feral_child#Documented_cases_o...
https://en.wikipedia.org/wiki/Critical_period
Edit: It reminded me of this story I saw recently about a girl neglected until age 7. Today she is like a 2 year-old in a 20 year-old's body. Keep in mind there is nothing physically wrong with her other than neglect. Consciousness is emergent behavior. Having the physical elements alone is not enough.
http://www.tampabay.com/projects/girl-in-the-window/neglect-...
One of the things that actually struck me about this theory was that it really boosts the idea that we should respect the minds of non-human animal mind because they may not experience the world differently than we do.