Fossils have revealed that two types of ancient human ancestors coexisted, although the exact timing is unclear, with estimates ranging around 2.8 million years ago or more than 2 million years ago. The discovery was made in a region that includes the Afar Rift in Ethiopia, and possibly other locations such as Morocco. The findings appear to shed new light on the history of early humans, but the specifics of the discovery and its implications are still being reported from different outlets.