Our results suggest that the morphology
of the central tooth and the pair of lateral teeth and the presence or absence of a pair of intermediate
accessory lateral teeth could be used to distinguish among species. We found no support for the subgeneric
differentiation of the species. However, the presence or absence of the intermediate lateral accessory plate
was characteristic of species divisions. We noted sexual dimorphism in the shape of the teeth in some
species, and considerable variability of the shape of teeth within a single species. Based on our results,
the genus Nassarius cannot be split into subgenera using radula morphology