| Synonym | Author | CoL Status | Valid | Synonymy | Combination |
|---|---|---|---|---|---|
| Cardium orbita | Sowerby, 1833 | synonym | No | senior synonym |
original combination |
| Cardium philippinensis | Shirley, 1912 | synonym | No | junior synonym |
original combination |
| Trachycardium orbita | (Sowerby, 1833) | synonym | No | senior synonym |
new combination |
| ! Trachycardium orbitum | (Sowerby, 1833) | synonym | No | senior synonym |
new combination |
| Trachycardium philippinensis | Dall, Bartsch, & Rehder, 1938 | synonym | No | junior synonym |
original combination |
| Vasticardium orbita | (Broderip & Sowerby I, 1833) | accepted name | Yes | senior synonym |
new combination |
| ! Vasticardium orbitum | (Broderip & Sowerby I, 1833) | synonym | No | senior synonym |
new combination |