| Synonymous name | : | †Ichthyosaurus crassimanus Tate & Blake, 1876 | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Ichthyosaurus longifrons Owen, 1881 | |
Ref: PBDB: 7 May 2013. |
| Synonymous name | : | †Ichthyosaurus longipennis Mantell, 1851 | |
Ref: PBDB: 31 Jan 2018. |
| Synonymous name | : | †Ichthyosaurus microdon Wagner, 1851 | |
Ref: PBDB: 30 Apr 2013. |
| Synonymous name | : | †Ichthyosaurus zetlandicus (Seeley, 1880) | |
Ref: PBDB: 30 Apr 2013. |