Dental microwear takes the form of pits and scratches on the tooth enamel which are only visible under a microscope. It is produced by the interaction of the food and other ingested material with the teeth and can be used to determine changes in the diet and palaeoenvironment. The dental microwear of Plagiolophus minor from sites in Western Europe from both before (MP 18 and 20) and after the Grande Coupure (MP 21) was studied in order to assess any changes in the diet across this turnover, and hence whether there is any evidence of palaeoenvironmental change. The implications of these results will be discussed.