Thermoluminescence (TL) dating of burnt silex (flint, chert), electron spin resonance (ESR) dating of teeth and 14C-accelerator-mass-spectrometry (AMS) dating of bones has been carried out on samples from the Late Middle Palaeolithic and Early Upper Palaeolithic levels of the Geißenklösterle Cave, South Germany. ESR dating on tooth enamel from the upper part of level IV, which contains a very small undefined Middle Palaeolithic assemblage, yields a mean age of 43·34 ka. The overlying Early Aurignacian (level III) is placed in the Hengelo Interstadial by palaeoecological analysis. 14C-AMS results give a mean age of 38·40·85 ka, whereas a mean age of 40·21·5 ka is obtained by TL of burnt silex, confirming the correlation of the Early Aurigna...