| Phylum: | MOLLUSCA | |
| Classe: | GASTROPODA | Cuvier, 1797 |
| Ordine: | MESOGASTROPODA | Thiele, 1925 |
| Superfamiglia: | CERITHIOIDEA | Fleming, 1822 |
| Turritellidae | Clarke, 1851 | Mathildidae | Dall, 1889 |
| Architectonicidae | Gray, 1850 | Caecidae | Gray, 1850 |
| Potamididae | Adams H. & A., 1854 | Finellidae | Thiele, 1929 |
| Cerithiidae | Fleming, 1822 | Cerithiopsidae | Adams H. & A., 1853 |
| Triphoridae | Gray, 1847 | Thiaridae | Preston, 1915 |
| Melanopsidae | Adams H. & A., 1854 | Siliquaridae | Anton, 1838 |