http://popups.lib.uliege.be/3041-5527/index.php?id=6090 Homo erectus used different kinds of stone-tools : handaxes, choppers, borers and cutting-tools. He also had wooden “spears”, antler clubs, hearths and dwellings. It can be shown that heavy-duty choppers and light-duty cutting-tools generally were made of different kinds of raw materials. Antler, bones, ivory and wood were taken for different types of tools. This shows that Homo erectus had well defined traditions with fixed symbols in the common mind of social groups. The system of tools and artifacts s.l. has strong correlations to the system of classified ideas or word symbols. Therefore there is no doubt that Homo erectus had spoken. Numéros en texte intégral ERAUL 62 Cultural environment - archaeological aspects fr Fri, 30 Jan 2026 14:45:26 +0100 Fri, 30 Jan 2026 14:45:35 +0100 http://popups.lib.uliege.be/3041-5527/index.php?id=6090 0