brings us closer to defining a set of pieces that originated at the base of their evolution and that are common to all of them or to some of their subgroups ”. In this sense, Dr. Villanueva-Cañas has explained that “we still do not know the function of an important part of our genes, for this reason an effort must be made to characterize them ”, as is the case of one of those that has been identified during the study (neuronatin), which has a role in development of the brain hitherto unknown. Researchers from the National Museum of Natural Sciences and the Autonomous University of Madrid (UAM) have confirmed that the Neanderthal Man’s thorax was considerably broader in its lower part than that of Homo sapiens , which would be linked to higher oxygen consumption. The results are based on the analysis of fossil remains from the El Sidrón cave
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The Homo neanderthalensis is an extinct relative of the Homo sapiens who has been in the focus of the scientific community for over 150 years. One of the biological factors that most North Korea Email List characterize him is his great muscle mass. This, according to specialists, would entail a contribution of air to the body that is also large, since muscle tissue is a great consumer of O2. This high oxygen consumption should be reflected in the rib cage. However, this has not yet been verified by traditional methods, since the ribs and vertebrae generally appear fragmented or deformed in the fossil record. Now, paleoanthropologists from the Autonomous University of Madrid (UAM) and the National Museum of Natural Sciences (MNCN), using techniques such as 3D geometric morphometry, have been able to know what the thorax of the Neanderthal man was like.
The specialists studied more than 100 thoracic remains (ribs and vertebrae) from the El Sidrón site (Asturias, Spain), along with remains from other Neanderthals (Kebara 2, Shanidar 3, Tabun 1, La Chapelle-aux-Saints). The results were published in the Journal of Human Evolution . Virtual reconstruction After a task of reconstruction of ribs and vertebrae using 3D techniques, the authors concluded that Neanderthals would be characterized by a relatively shorter rib cage and that it would be wider in its lower part than in Homo sapiens (see figure) . “As the diaphragm, one of the muscles most involved in respiration, is located in the lower part of the thorax, an expansion of this area could give Neanderthals greater respiratory power and a greater entry of air into the body due to a greater diaphragmatic contribution ”, assures co-author Daniel García Martínez, from the