correa et al. (2010) examined phylogenetic relationships among 50 taxa of this family using a supermatrix approach (concatenation of the 16s, internal transcribed spacers its1 and its2 genes) involving both maximum likelihood and bayesian inference. her phylogenetic analysis demonstrates the existence of three deep clades of lymnaeidae representing the main geographic origin of species (america, eurasia and the indo-pacific region). it demonstrates that the nomenclature of most genera in the lymnaeidae does not reflect evolutionary relationships.