| Opercularia Goldfuss, 1820 |
| Opercularia articulata Goldfuss, 1820 |
| Opercularia coarctata (Claparède & Lachmann, 1858) |
| Opercularia corisae Fauré-Fremiet, 1906 |
| Opercularia curvicaula (Penard, 1922) |
| Opercularia cylindrata Wrzesniowski, 1870 |
| Opercularia gracilis Fauré-Fremiet, 1904 |
| Opercularia longigula Nenninger, 1948 |
| Opercularia microdiscum Fauré-Fremiet, 1904 |
| Opercularia plicatilis Stokes, 1884 |
| Opercularia stenostoma Stein, 1854 |
| Operculariidae Fauré-Fremiet in Corliss, 1979 |
| Orbopercularia Guhl, 1979 |
| Orbopercularia lichtensteini (Stein, 1854) |
| Propyxidium Corliss, 1979 |
| Propyxidium vernale (Stokes, 1887) |
| Pyxidiella Corliss, 1960 |
| Pyxidiella vernale Stokes, 1887 |