| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Actinotrocha harmeri | Zimmer, 1964 | synonym | No | Junior synonym |
Original combination |
| Actinotrocha ikedai A | Selys-Longchamps, 1907 | synonym | No | other |
Original combination |
| Phoronis pacifica | Torrey, 1901 | ambiguous synonym | No | other |
Original combination |
| Phoronopsis harmeri | Pixell, 1912 | accepted name | Yes | senior synonym |
Original combination |
| Phoronopsis malakhovi | Temereva, 2000 | ambiguous synonym | No | questionable |
Original combination |
| Phoronopsis striata | Hilton, 1930 | synonym | No | Junior synonym |
Original combination |
| Phoronopsis viridis | Hilton, 1930 | synonym | No | Junior synonym |
Original combination |