BURGOS (EFE) .- A scientific study, based partly on the Spanish fossil site of Atapuerca and published in the journal “Nature Communications” concludes that the pattern of the face of Homo sapiens is “unique in human evolution “.
The work was conducted by an international team of paleoanthropologists, including the scientific director of the Museum of Human Evolution in Burgos and co-director of Atapuerca, Juan Luis Arsuaga, counted on the evolution of the skeleton of the human face in the last two million years.
The experts concluded that the histological pattern seen in Homo sapiens, with large areas of bone resorption in the facial area, is unique in human evolution.
primitive pattern
The growth model of the face of Homo erectus, Neanderthals and fossils from the Sima de los Huesos in Sierra Atapuerca continues to change a primitive pattern, in which there is practically just bone deposition in the face and resorption is nonexistent or minimal.
Only in the case of Homo antecessor from the Gran Dolina in the Sierra de Atapuerca, the growth model might look modern, but for now there is only one individual, rather incomplete, which it may partially studied the histology of the surface of the face.
Method
The method was examined by electron microscopy and confocal surface bones face individuals in the development process so as to distinguish the areas where bone others where it is absorbed is deposited.
During the facial development of facial bones grow mainly in areas where deposition occurs bone. In areas where reabsorption growth is much more limited predominates. This difference makes the modern human face has highlighted, it is “sculpted” with prominent cheekbones, for example, and is vertical rather than projecting forward on a hill, while there are only great apes and bone deposition it moves across the face during growth
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