[7] Many species of freshwater snails that are characterized by a turreted shell were originally placed within the genus Melania Lamarck, 1799.

This genus as delimited by authors of the late 19th and early 20th century contained hundreds of species, and was successively split into different groupings.

Moreover, the Melanidae as traditionally circumscribed were found to be polyphyletic, containing species from many different groups, which were successively recognized as distinct families, such as the Pachychilidae, Semisulcospiridae, Pleuroceridae, Melanopsidae, and Paludomidae.

[10] This family of snails is found worldwide, and are particularly diverse in the tropics and subtropics.

[10] Genera in the family Thiaridae include: This article incorporates public domain text from the reference[1]