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

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

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

Conclusion

For more than two decades per view dominated anthropological discussions that all modern human variation derived from Africa within per relatively recent chronological framework. Recent years challenged this paradigm with new discoveries from Europe, Pendio, and other localities, as well as by new advances durante theory and methodology. These developments are now setting the tirocinio for verso new understanding of the human story per general and the emergence of modern humans con particular (e.g., , , , , , , , , , , , , , , , , ). 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 to the notion of assimilation (e.g., ) between populations migrating “out of Africa” and populations already established durante these parts of Eurasia.

It is still premature antichat collegamento puro indicate whether the Qesem hominin ancestors evolved mediante Africa prior to 400 kyr , developed blade technologies , , and then migrated onesto the Levant puro establish the new and unique Acheulo-Yabrudian cultural complex; or whether (as may be derived from our model) we face verso local, Levantine emergence of a new hominin lineage. The plethora of hominins mediante the Levantine Middle Paleolithic fossil superiorita (Qafzeh, Skhul, Zuttiyeh, Tabun) and the fact that the Acheulo-Yabrudian cultural complex has giammai counterparts sopra Africa may hint sopra 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 preciso the emergence of modern human populations , , .

It should not come as a surprise that H. erectus, and its successors managed, and durante fact evolved, onesto obtain verso substantial amount of the densest form of nutritional energy available mediante nature – fat – preciso the point that it became an obligatory food source. Animal fat was an essential food source necessary durante order esatto meet the daily energy expenditure of these Pleistocene hominins, especially taking into account their large energy-demanding brains. It should also not che as verso surprise that for a predator, the disappearance of a major prey animal may be a significant reason for evolutionary change. The elephant was a uniquely large and fat-rich food-package and therefore per 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 a species that was more adept, both physically and mentally, to obtain dense energy (such as fat) from per higher number of smaller, more evasive animals. The concomitant emergence of verso new and innovative cultural complex – the Acheulo-Yabrudian, heralds verso new batteria of behavioral habits including changes con hunting and sharing practices , , that are relevant sicuro our model.

If indeed, as we tried to spettacolo, the dependence of humans on fat was so fundamental sicuro their existence, the application is made possible, perhaps after some refinement, of this proposed bioenergetic model to 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 sopra the Levant, reflecting verso link between human biological and cultural/behavioral evolution.

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