Comparison of hominid skull-jaw angles, illustration

Numéro d’image : 12584227
Comparison of hominid skull-jaw angles, illustration
Comparison of hominid skull-jaw angles, illustration. Over millions of years, the fossil record shows changes in the angles of the skull in hominids, particularly those of the jaw and face. These changes are shown in this graph, with three modern ape species at right: chimpanzee, orangutan, and gorilla. Above these is the extinct hominid Homo erectus, part of the human evolutionary tree. At top right is a modern human (Homo sapiens). The face becomes progressively flatter as modern humans evolved. Modern humans uniquely have a flat face, high forehead, small jaw and jutting chin. Various theories have been suggested for the evolution of these traits, including the development of cooking and the social nature of humans.
Licence : Droits gérés
Crédit: Science Photo Library / JOSE ANTONIO PENAS
Taille de l’image : 4600 px × 4600 px
Model Release : Non requis
Property Release : Non requis
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