Sopra this respect, the Qesem hominins may play an important role

Con summary, the notion that shifts mediante human life histories, accompanied by improved intelligence, are an evolutionary response to verso dietary shift towards high-quality food resources that are difficult onesto acquire has already been suggested by Kaplan . Our model is innovative durante that it suggests a mechanism for such a dietary shift that could have propelled hominins to per new evolutionary stage.

Conclusion

For more than two decades per view dominated anthropological discussions that all modern human variation derived from Africa within verso relatively recent chronological framework. Recent years challenged this paradigm with new discoveries from Europe, Declivio, and other localities, as well as by new advances mediante theory and methodology. These developments are now setting the tirocinio for per new understanding of the human story durante general and the emergence of modern humans durante particular (ancora.g., , , , , , , , , , , , , , , , , ). http://datingranking.net/it/hater-review/ Analysis of their dental remains suggests a much deeper time frame between at least some of the ancestral populations and modern humans than that which is assumed by the “Out of Africa” model. This, combined with previous genetic studies (ed.g., , , , ), lends support sicuro the notion of assimilation (di nuovo.g., ) between populations migrating “out of Africa” and populations already established sopra these parts of Eurasia.

It is still premature preciso indicate whether the Qesem hominin ancestors evolved con Africa prior puro 400 kyr , developed blade technologies , , and then migrated puro the Levant puro establish the new and unique Acheulo-Yabrudian cultural complex; or whether (as may be derived from our model) we face per local, Levantine emergence of a new hominin lineage. The plethora of hominins durante the Levantine Middle Paleolithic fossil record (Qafzeh, Skhul, Zuttiyeh, Tabun) and the fact that the Acheulo-Yabrudian cultural complex has giammai counterparts per Africa may hint durante favor of local cultural and biological developments. This notion gains indirect support from the Denisova finds that raise the possibility that several different hominin groups spread out across Europe and Oriente for hundreds of thousands of years, probably contributing onesto the emergence of modern human populations , , .

It should not come as per surprise that H. erectus, and its successors managed, and con fact evolved, sicuro obtain a substantial amount of the densest form of nutritional energy available in nature – fat – sicuro the point that it became an obligatory food source. Animal fat was an essential food source necessary con order sicuro meet the daily energy expenditure of these Pleistocene hominins, especially taking into account their large energy-demanding brains. It should also not che tipo di as a surprise that for a predator, the disappearance of per major prey animal may be verso significant reason for evolutionary change. The elephant was per uniquely large and fat-rich food-package and therefore a most attractive target during the Levantine Lower Palaeolithic Acheulian. Our calculations esibizione that the elephant’s disappearance from the Levant just before 400 kyr was significant enough an event sicuro have triggered the evolution of per species that was more adept, both physically and mentally, preciso obtain dense energy (such as fat) from per higher number of smaller, more evasive animals. The concomitant emergence of a new and innovative cultural complex – the Acheulo-Yabrudian, heralds per new servizio of behavioral habits including changes con hunting and sharing practices , , that are relevant onesto our model.

If indeed, as we tried onesto esibizione, the dependence of humans on fat was so fundamental to their existence, the application is made possible, perhaps after some refinement, of this proposed bioenergetic model preciso the understanding of other important developments con human evolutionary history

Thus, the particular dietary developments and cultural innovations joined together at the end of the Lower Paleolithic period durante the Levant, reflecting per link between human biological and cultural/behavioral evolution.