Abstract
Evolution of the Clavicular Morphology within the Genus Homo. Architectural and Functional Consequences on the Shoulder Girdle. The clavicle is the less studied shoulder bone from the point of view of comparative anatomy in spite of its importance for the movements of the upper limbs. In this study we have compared the clavicle curvature between extant hominoids and some fossils ( Homo habilis, Homo ergaster, Homo antecessor and Neandertal). The curvature in superior view shows the capacity of arm elevation. In posterior view, the curves show the position of the scapula in regard to the thorax. In superior view, there is no real difference between fossils and modern man. This means that human fossils clavicles, in peculiar neandertal one, do not presented a more S shaped morphology than those of modern human. In posterior view, the clavicle of fossil men shows that their scapula was situated higher on the thorax than that of modern human.
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