Berhane Asfawis an Ethiopian paleontologist of Rift Valley Research Service, who co-discovered human skeletal remains at Herto Bouri, Ethiopia that revealed a transition into modern humans. The specimen was called Homo sapiens idaltu... (wikipedia)
We have proved that one (species) is transforming into the other, so this evidence is important to show that there is human evolution... that human evolution is a fact and not a hypothesis.
Dating to just over four million years ago, the fossils represent unambiguous evidence for human evolution.
For the first time, we found fossils that allow us to connect the first phase of human evolution and the second phase.
All (three species) were able to be found in one place, proving that evolution is a fact. Successive records that we see here prove that the Afar region is the origin of human kind.