Way back in the pre-PC days I was taught there were Caucasian, Negroid, Mongoloid and Australoid. The Australoid are interesting because although they have black skin they are distinctly different than the Negro race in other traits and features.
Very interesting! I was only taught about the 3 - Caucasian, Negroid, Mongoloid but you make a great point. "although they have black skin they are distinctly different than the Negro race in other traits and features"... that's very true now that I think of it.
Maybe I'm older than I thought and when I went to school they hadn't discovered Australia yet. LOL