In Bordes's typology for the Lower and Middle Paleolithic, he defines four major classes of side scrapers: single, double, convergent, and transverse forms. Data from three Middle Paleolithic assemblages, one from Iran and two from France, suggest that these scraper classes may be interpreted as representing stages in reduction of flake blanks through continued reuse and remodification.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.