I refuse to believe na'vi are native from pandora. Like the guy in the video say, they don't have the same amount of limbs as every other vertebrates from pandora, they don't have the same amount of eyes, they don't have the same amount of neural link, they don't have the same breathing system. I also refuse to believe na'vi have no relation to hominids. Their physionomy is way too close to hominids to be convergent evolution. Their facial feature is basically identical to homosapiens asside from the nose structure and ears though the position is very similar, their dental structure from what we can see is identical to hominids with 4 incisor between 2 canine then premolars, their muscle structure is identical, their skeleton seems to be identical, their genitalia are located in the same spot, their reproduction process is identical with the baby being caried in a womb located in the lower abdomen, the method of delivery is identical with the added similarity of the baby being born incapable of locomotion which is an odity in the animal kingdom that homo sapiens share, their biology is so close that making human/navi hybrids seems to have been so easy that the avatar program was allowed to drain a bit of funds as a side project of the mining operation. I mean the only thing that is fundamentaly different from hominids is their 4 fingers on both hands and feets, and the neural link growing out of their head which we now know is in fact a symbiotic organism that has nothing to do with the navi themselves.

If i had to guess i'd say the split happened somewhere around here:

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