| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Coccodentalium carduus | (Dall, 1889) | synonym | No | senior synonym |
new combination |
| Dentalium carduum | Dall, 1889 | synonym | No | senior synonym |
original combination |
| Dentalium carduus | Dall, 1889 | synonym | No | senior synonym |
original combination |
| Fissidentalium carduum | (Dall, 1889) | synonym | No | senior synonym |
new combination |
| Fissidentalium carduus | (Dall, 1889) | accepted name | Yes | senior synonym |
new combination |
| Fissidentalium floridense | (Henderson, 1920) | synonym | No | junior synonym |
new combination |