| Synonymous name | : | Mosasaurus belgicus F. Holl | |
Ref: PBDB: 4 Apr 2018. |
| Synonymous name | : | †Mosasaurus camperi Meyer, 1832 | |
Ref: PBDB: 9 Jan 2018. |
| Synonymous name | : | †Mosasaurus fulciatus Cope, 1870 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Mosasaurus maximus Cope, 1869 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Mosasaurus oarthrus Cope, 1870 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Mosasaurus princeps Marsh, 1869 | |
Ref: PBDB: 27 Oct 2013. |