| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Phascolosoma asperum | Grübe, 1868 | synonym | No | junior synonym |
original combination |
| Phascolosoma pacificum | Keferstein, 1866 | accepted name | Yes | senior synonym |
original combination |
| Phycosoma pacificum | (Keferstein, 1866) | synonym | No | senior synonym |
new combination |
| Phymosoma asperum | (Grübe, 1868) | synonym | No | junior synonym |
new combination |
| Phymosoma pacificum | (Keferstein, 1866) | synonym | No | senior synonym |
new combination |