| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Hyotissa numisma | (Lamarck, 1819) | accepted name | Yes | senior synonym |
new combination |
| Ostrea thaanumi | Dall, Bartsch & Rehder, 1938 | synonym | No | junior synonym |
original combination |
| ! Parahyotissa munisma | (Lamarck, 1819) | synonym | No | senior synonym |
new combination |
| Parahyotissa numisma | (Lamarck, 1819) | synonym | No | senior synonym |
new combination |