It mentions (in an off-hand, not particularly focal biti) that is about texture (kinky hair, which is the same hair type sometimes called "Jewish Hair", and also common in some Asian/Pacific populations) than style (afro or otherwise.)

It would be more accurate (though still misleading) to call it "human hair", since among mammals kinky hair is unique (but obviously not universal) to humans.

I believe this is https://www.cs.yale.edu/homes/wu-haomiao/publication/static/...

Thank Randy Pausch for color photos in SIGGRAPH-destined papers.