(Phys.org)—A pair of anthropology researchers, one with the University of California, the other Modesto College has found what they believe are clues to human evolutionary development by conducting a long term study of bonobo anatomy. In their paper published in Proceedings of the National Academy ...
Evidence of interpersonal violence has been documented previously in Pleistocene members of the genus Homo , but only very rarely has this been posited as the possible manner of death. Here we report the earliest evidence of lethal interpersonal violence in the hominin fossil record. Cranium 17 recovered from the Sima de los Huesos Middle Pleistocene site shows two clear perimortem depression fractures on the frontal bone, interpreted as being produced by two episodes of localized blunt force trauma. The type of injuries, their location, the strong similarity of the fractures in shape and size, and the different orientations and implied trajectories of the two fractures suggest they were produced with the same object in face-to-face interpersonal conflict. Given that either of the two traumatic events was likely lethal, the presence of multiple blows implies an intention to kill. This finding shows that the lethal interpersonal violence is an ancient human behavior and has important implications for the accumulation of bodies at the site, supporting an anthropic origin.
While scientists are quite confident that modern humans originated from Africa, they’re unclear on the routes they took to move out of the continent. Researchers may have just provided a clearer picture of this epic journey and settled the long-standing debate. The latest study, published in the American Journal of Human Genetics, suggests early humans traveled through Egypt—not Ethiopia—on their voyage out of Africa.
La violence entre les Hommes serait bien plus vieille qu’on ne le pense. Un crâne a été reconstitué à partir de 52 fragments trouvés au fond d’un puits sur le site archéologique de Sima de los Huesos (la Grotte aux os), dans le nord de l'Espagne, relate la presse britannique. Le crâne, presque complet, montre des preuves manifestes de deux impacts graves au-dessus de l’oeil gauche. Les scientifiques n'ont trouvé aucune preuve pouvant signifier qu’une guérison avait eu lieu autour des trous, ce q
More than 3.6 billion years ago, a major transition was made on Earth whereby a dilute, swirling cauldron of simple chemical soup made a critical step towards creating the building blocks of life. The simple chemicals became amino acids, the fundamental building blocks of more complicated protein molecules. These proteins then somehow came together to form a single, primitive cell.
It is eighteen years since the human fossils recovered from the TD6 level of the Gran Dolina cave site, in Sierra de Atapuerca (Burgos, northern Spain) were assigned to a new hominin species, Homo antecessor. This review summarizes the main results obtained from the study of these fossils during this period. The increase of the African and Eurasian fossil record, as well as the application of new methodological approaches, has led to competing interpretations about its hypothetical phylogenetic position and possible evolutionary scenarios. At present, we can argue that this species is defined by a unique mosaic of primitive traits for the Homo clade, a certain number of derived features present in modern humans, a significant suite of derived features shared with Neandertals and their ancestors in the European Middle Pleistocene (in particular with the Atapuerca-Sima de los Huesos hominins), and some derived features shared with the Chinese Middle Pleistocene hominins. From this evidence, we suggest that a speciation event could have occurred in Africa/Western Eurasia, originating a new Homo clade. Homo antecessor, most probably dated to the MIS 21, could be a side branch of this clade placed at the westernmost region of the Eurasian continent.
Des impacts d'astéroïdes survenus il y a environ 3,3 milliards d'années ont fait bouillir les océans, selon une étude récemment publiée dans la revue Geology par les chercheurs Donald Lowe (Stanford) et Gary Byerly (Louisiana University). Ceux-ci ont examiné des traces de ces impacts sur...
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