An early Stone Age industry (Lower Palaeolithic) characterized by crudely worked hand axes. The implements from the type site Chelles-sur-Marne, near Paris, France, that gave the industry its name are now grouped with the Acheulian industry. The term Chellean, in the sense of earliest hand-ax culture, has been replaced by Abbevillian industry. The industry was so-named in the 1880s, replacing the term Acheulian, which was eventually reinstated.