Multiple versions of human species – was pre-history like Lord of the Rings?
Here’s a little mini-doc from the Ancient Aliens TV series (Season 11’s episode, The Prototypes), where they examine the beliefs that the early existence of different species of hominids may possess an extraterrestrial explanation.
Was pre-history like Lord of the Rings, with lots of different humanoid species knocking around? Maybe. Not so sure about aliens mucking about with our evolution, though.