| Synonymous name | : | †Diplocoenia polymorpha Koby, 1881 | |
Ref: PBDB: 19 Jan 2022. |
| Synonymous name | : | †Heliocoenia abichi Babaev, 1965 | |
Ref: PBDB: 30 Apr 2013. |
| Synonymous name | : | †Heliocoenia carpathica (Morycowa, 1964) | |
Ref: PBDB: 27 Oct 2013. |
| Synonymous name | : | †Stylina columbaris Scott & Aleman, 1984 | |
Ref: PBDB: 30 Apr 2013. |
| Synonymous name | : | †Stylina spissa Becker, 1875 | |
Ref: PBDB: 30 Apr 2013. |
| Synonymous name | : | †Stylina subramosa Koby, 1889 | |
Ref: PBDB: 30 Apr 2013. |