| Nominal Species (n = 3) | Present allocation (n = 3) | Ref. |
|---|---|---|
| Didymochelia edwardi Bellan-Santini & Ledoyer, 1987 | Didymochelia edwardi | 3477 |
| Didymochelia ledoyeri Lowry & Stoddart, 1995 | Didymochelia ledoyeri | 3477 |
| Didymochelia spongicola Barnard, 1931 | Didymochelia spongicola | 3477 |