| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Tenacibaculum aquimarinum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tectibacter | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tectibacter vulgaris T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tatlockia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tatlockia micdadei T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tatlockia maceachernii | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tannockella | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tannockella kyphosi T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tannerella forsythensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tamlicoccus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tamlicoccus marinus T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tamlana haliotis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tabrizicola thermarum | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tabrizicola soli | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tabrizicola rongguiensis | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tabrizicola flagellatus | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Tabrizicola blastica | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Szabonella | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Szabonella alba T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Syntrophospora | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Syntrophospora bryantii T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Syntrophobacterium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Syntrophobacterium sulfatireducens T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Symbiotes | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Symbiotes lectularius T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Symbiotes lectularia | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Symbiopectobacterium | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Symbiopectobacterium purcellii T | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sutcliffiella rhizosphaerae | Unknown | Valid (ICNP) | Excubia bot over 3 years ago | |
| Sutcliffiella deserti | Unknown | Valid (ICNP) | Excubia bot over 3 years ago |