A 1.8 million year old skull indicates there may have been just one human species on Earth at that time
Article from the website iflscience.com.
A new paper published in Science details a 1.8 million year old skull. The skull find has stirred up debate amongst palaeoanthropologists, as the authors of the new paper have asserted that the hominid skull shows that Homo habilis, Homo rudolfensis and Homo erectus are all part of a single evolving lineage that led to modern humans. Other scientists disagree however, saying there is still evidence that at least three distinct species of humans co-existed in Africa.
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