An Upper Palaeolithic artifact, occasionally encountered in Aurignacian, Gravettian, and Solutrean assemblages but more typically found in Magdalenian toolkits. It consists of a decorated cylinder of antler with a hole through the thickest part. The baton may be decorated with intricate carving. Its function is unknown, although it is generally interpreted as a shaft-straightener, from the use-wear in and around the hole.