The scenario of Homo sapiens origin/s within Africa has become increasingly complex, with a pan-African perspective currently challenging the long-established single-origin hypothesis. In this paper, we review the lines of evidence employed in support of each model, highlighting inferential limitations and possible terminological misunderstandings. We argue that the metapopulation scenario envisaged by pan-African proponents well describes a mosaic diversification among late Middle Pleistocene groups. However, this does not rule out a major contribution that emerged from a single population where crucial (...) derived features—notably, a globular braincase—appeared as the result of a punctuated, cladogenetic event. Thus, we suggest that a synthesis is possible and propose a scenario that, in our view, better reconciles with consolidated expectations in evolutionary theory. These indicate cladogenesis in allopatry as an ordinary pattern for the origin of a new species, particularly during phases of marked climatic and environmental instability. (shrink)

“Light will be thrown on the origin of man and his history”: this was the single line that Charles Darwin devoted to human evolution in the Origin of Species (1859). At present, there is a number of extinct species, which we understand to be related to human evolution, demonstrating that the Darwin’s prediction was correct: light has been thrown, indeed. Moreover, the science of human origin (or palaeoanthropology) appears to be able to shed much light not only on the natural (...) history of humankind, but also on mechanisms and patterns of "evolution" as a general phenomenon. This is of special interest when we focus on data and hypotheses concerning the origin of our own species, Homo sapiens. (shrink)