Prehistoric Hair
Except for people in Kansas*, humans are descended from apes. The simians have hair all over their bodies, don't use deodorant, and have sex in public. Other than that they are much like humans. Except that they don't have language. Or cars. And they don't play bocce. And some of them still have tails.

*According to Kansas' legislature, Kansans are descended from Adam and Eve who only began procreation when the world was created about 6,000 years ago. Consequently, the rest of humanity has a 4.2 million year head start (give or take 6,000 years) on them in evolving. We understand that many Kansans now own automobiles and some have already begun using deodorants.

Where you've been
Dawn of History Hair
Way back when...