Shell samples of the marine gastropod <i>Turbo sarmaticus</i> have been examined to assess their potential for electron spin resonance (ESR) dating. The shells were found to be composed of aragonite. ESR analysis shows the presence of three radiation sensitive peaks. Equivalent dose (ED) values for two of the peaks have been determined for thirteen samples. When the two sets of ED values are plotted against each other, four distinct clusters are found that appear to represent four different age groups. The apparent age groups determined here are consistent with the stratigraphic record of the sites. -- AATA