The saltational model for the dawn of H. sapiens, chin, adolescence phase, complex language and modern behavior

Abstract

A new model may contribute to resolve the origin problem of H. sapiens. According to our new viewpoint, Neandertals were neither one of our direct ancestors nor a different species. Their origin was not in Europe 150-200 or 300 thousand years ago. As for the origin of H. sapiens, it was neither in Africa roughly 2 million years ago nor roughly 200 thousand years ago. In other words, both the Multiregional model and the recent African origin model seem wrong. Our own species arose in the Middle East approximately 150 thousand years ago and split into two subspecies: Moderns and Neandertals. Rapid and radial expansion of H. sapiens from the origin implies a revolution (see Figure 1). Complex language, modern behavior and even adolescence phase plus chin might be included into the revolution. This possibility seems consistent with the data and could also be tested via; 1-the origin of complex language based on the modern human form of FOXP2 gene 2-the origin of adolescence or adolescent growth spurt 3- the genetic origin of the Flores hobbits. If all of these three origins appeared in the Levant about 150 thousand years ago then our model is true in all aspects. This speciation seems an unexpected revolution or macroevolution occured in several thousand years. The last pre-sapiens hominids may be extinct due to OIS 6 namely without replacement by sapiens.