Archaeologists are using experimental archaeology to investigate whether Neanderthals used rhinoceros teeth as tools. The study was prompted by the discovery of an unusually high percentage of rhino teeth, rather than bones, at Neanderthal sites in China and France, dating back 300,000 to 130,000 years ago. These teeth exhibited markings consistent with being struck by rocks, similar to those produced when using bone as a hammer for stone tool manufacture. To confirm this hypothesis, researchers, led by Alicia Sanz-Royo of the University of Aberdeen, obtained highly regulated rhino teeth to replicate these ancient tool-making processes, aiming to better understand the diverse toolkit of Neanderthals.