| Phylum: | MOLLUSCA | |
| Classe: | BIVALVIA | Linneo, 1758 |
| Ordine: | PHOLADOMYOIDA | Newell, 1965 |
| Superfamiglia: | PANDOROIDEA | Rafinesque, 1815 |
| Pandoridae | Rafinesque, 1815 | Laternulidae | Hedley, 1918 |
| Lyonsiidae | Fischer, 1887 | Periplomatidae | Dall, 1895 |
| Thraciidae | Stoliczka, 1870 |