Did you know.....?

Question

Did you know that other than us, there were 6 known (extinct) Hominina (human-like) species that once existed and perhaps co-existed with one another on Earth? We are the only known Hominina species to have luckily survived so far.

Hominina:
http://en.wikipedia.org/wiki/Hominina

Homo (humans):
http://en.wikipedia.org/wiki/Homo_%28genus%29
Paranthropus (extinct):
http://en.wikipedia.org/wiki/Paranthropus
Australopithecus (extinct):
http://en.wikipedia.org/wiki/Australopithecus
Sahelanthropus (extinct):
http://en.wikipedia.org/wiki/Sahelanthropus
Orrorin (extinct):
http://en.wikipedia.org/wiki/Orrorin
Ardipithecus (extinct):
http://en.wikipedia.org/wiki/Ardipithecus
Kenyanthropus (extinct):
http://en.wikipedia.org/wiki/Kenyanthropus

Answer 1

no, I didn't know that. I'd heard of other species in the homo category, for example Neanderthals had their own name. But i didn't know about the rest.

Answer 2

Just think what that would have done to the prostitution business! You'd never have to worry about getting the girl from the other species pregnant.

Venerial disease probably would have been prevalent though.