| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Thiofaba | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiodictyon elegans T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiodictyon bacillosum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiodictyon | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis violascens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis violacea T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis minor | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis gelatinosa | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis chemoclinalis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis cadagnonensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocystis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiococcus pfennigii T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiococcus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava sediminum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava pacifica T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava nitratireducens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava marina | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava indica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava dalianensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava atlantica | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thioclava | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocapsa roseopersicina T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocapsa rosea | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocapsa pendens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocapsa marina | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocapsa litoralis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiocapsa | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiobacter subterraneus T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiobacter | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thiobacillus thiophilus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |