The rules for Ape creation are SOOO sweet you can do all of the above. I'm not giving anything away when I say that there is one of the Archetypes who is human, but has Ape Qualities and Drawbacks. It's open for loads of options, and pre-historic man would certainly be one of them (great if you plan on running a campaign with a "Earth's Children" - Jean M. Auel sort of background...)

Hope that helps!

Dave (DFC)
co-editor/co-writer Terra Primate