You are close, "changing on their own."
The original species would have split into two separate populations and each population would have their own mutations and changes. Eventually these mutations would add up and each population would "change" into a different species, one more like modern apes and one more like modern humans.
Asgara
"I was so much older then, I'm younger than that now"
Save lives! Click here!Join the World Community Grid with Team EvC!
http://asgarasworld.bravepages.comhttp://perditionsgate.bravepages.com