| Prionospio fallax Söderström, 1920 |
| Prionospio fauchaldi Maciolek, 1985 |
| Prionospio heterobranchia Moore, 1907 |
| Prionospio japonicus Okuda, 1935 |
| Prionospio jubata Blake, 1996 |
| Prionospio lighti Maciolek, 1985 |
| Prionospio lobata Fauchald, 1972 |
| Prionospio malmgreni Claparède, 1870 |
| Prionospio malmgreni subsp. dubia Day, 1961 |
| Prionospio malmgreni var. dubia Day, 1961 |
| Prionospio multibranchiata E. Berkeley, 1927 |
| Prionospio perkinsi Maciolek, 1985 |
| Prionospio pinnata Ehlers, 1901 |
| Prionospio pygmaeus Hartman, 1961 |
| Prionospio rosariae Delgado-Blas, 2014 |
| Prionospio steenstrupi Malmgren, 1867 |
| Prionospio vermillionensis Fauchald, 1972 |
| Pseudopolydora Czerniavsky, 1881 |
| Pseudopolydora antennata (Claparède, 1869) |
| Pseudopolydora floridensis Delgado-Blas, 2008 |