| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Thomasclavelia ramosa T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thomasclavelia cocleata | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiothrix litoralis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosulfativibrio | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosulfativibrio zosterae T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosulfatimonas | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosulfatimonas sediminis T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosulfatihalobacter | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosulfatihalobacter marinus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiospirillum | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiospirillum jenense T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiospira | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiospira winogradskyi T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosphaera | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiosphaera pantotropha T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiorhodococcus minus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiorhodococcus bheemlicus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiopseudomonas caeni | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiopseudomonas alkaliphila | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thioprofundum lithotrophica | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thioploca | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thioploca schmidlei T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thioploca ingrica | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thioploca chileae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thioploca araucae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiopedia | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiopedia rosea T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiomonas cuprina | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiomicrospira thermophila | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Thiomicrospira psychrophila | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago |