| Naineris laevigata (Grube, 1855) |
| Naineris mutilata Treadwell, 1931 |
| Naineris setosa (Verrill, 1900) |
| Orbinia de Quatrefages, 1865 |
| Orbinia (Phylo) Kinberg, 1866 |
| Orbinia (Phylo) kupfferi Ehlers, 1875 |
| Orbinia americana Day, 1973 |
| Orbinia johnsoni (Moore, 1909) |
| Orbinia kupfferi (Ehlers, 1875) |
| Orbinia ornata (Verrill, 1873) |
| Orbinia papillosa (Ehlers, 1907) |
| Orbinia riseri (Pettibone, 1957) |
| Orbiniidae Hartman, 1942 |
| Paraorbinella Rullier, 1974 |
| Paraorbinella paucibranchiata Rullier, 1974 |
| Pararicia Solís-Weiss & Fauchald, 1989 |
| Pararicia belizensis Solís-Weiss & Fauchald, 1989 |
| Petibonnella Solís-Weiss & Fauchald, 1989 |
| Petibonnella multiuncinata Solís-Weiss & Fauchald, 1989 |
| Phylo Kinberg, 1866 |