| Cyclopecten Verrill, 1897 |
| Cyclopecten (Hyalopecten) Verrill, 1897 |
| Cyclopecten (Hyalopecten) hadalis Knudsen, 1970 |
| Cyclopecten bistriatus (Dall, 1916) |
| Cyclopecten catalinensis (Willett, 1931) |
| Cyclopecten exquisitus Grau, 1959 |
| Cyclopecten incongruus Dall, 1916 |
| Cyclopecten nanus Verrill & Bush, 1897 |
| Cyclopecten pernomus (Hertlein, 1935) |
| Cyclopecten strigillatus (Dall, 1889) |
| Parvamussium Sacco, 1897 |
| Parvamussium cancellatum (E. A. Smith, 1885) |
| Parvamussium pourtalesianum (Dall, 1886) |
| Parvamussium sayanum (Dall, 1886) |
| Propeamussiidae R. T. Abbott, 1954 |
| Propeamussium de Gregorio, 1884 |
| Propeamussium dalli (E. A. Smith, 1885) |
| Propeamussium pourtalesianum (Dall, 1886) |
| Propeamussium sayanum (Dall, 1886) |
| Similipecten Winckworth, 1932 |