| Scientific Name | Author | English Name |
|---|---|---|
| Bermudasignum frankenbergi | George, 2003 | |
| Mesosignum admirandum | Menzies & Frankenberg, 1967 | |
| Mesosignum ansatum | Menzies & Frankenberg, 1967 | |
| Mesosignum antarcticum | Schultz, 1979 | |
| Mesosignum asperum | Menzies & Frankenberg, 1967 | |
| Mesosignum brevispinis | Birstein, 1963 | |
| Mesosignum elegantulum | Birstein, 1963 | |
| Mesosignum kohleri | Menzies, 1962 | |
| Mesosignum latum | Birstein, 1970 | |
| Mesosignum macrum | Menzies & Frankenberg, 1967 | |
| Mesosignum magnadens | Menzies & Frankenberg, 1967 | |
| Mesosignum multidens | Menzies & Frankenberg, 1967 | |
| Mesosignum truncatum | Menzies & George, 1972 | |
| Mesosignum usheri | Menzies, 1962 | |
| Mesosignum vitjazi | Birstein, 1963 | |
| Mesosignum weddellensis | Choudhury & Brandt, 2004 |