If you traced your family tree back 185 million generations, you wouldn’t be looking at a human, a primate, or even a mammal. You’d be looking at a fish. So where along that line does the first human show up? The answer may surprise you.
Images of prehistoric species used in this episode:
Tiktaalik, Procunsul, Plesiadapsis, Juramaia, Hylonomus – by Nobu Tamura (http://spinops.blogspot.com/)
Homo erectus (by Tim Evanson) http://bit.ly/1uwI5zu