A New Human Species Has Been Identified In Africa

Homo erectus was not alone in ancient Africa. Newly discovered fossil evidence, detailed in the latest issue of Nature, strongly suggests that no fewer than three distinct species of early humans from the genus Homo co-existed on the continent between 1.7 and 2 million years ago.
The findings, which run counter to the hypothesis that modern humans evolved linearly out of Homo erectus, provide some of the most compelling evidence to date that there were multiple, parallel lines of evolution early in our genus' history.