| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Testudinibacter | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Testudinibacter aquarius T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus halophilus T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus halophilus subsp. flandriensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus halophilus subsp. halophilus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus koreensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus muriaticus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus osmophilus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetragenococcus solitarius | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrasphaera | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrasphaera australiensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrasphaera duodecadis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Tetrasphaera elongata | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Tetrasphaera japonica T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrasphaera jenkinsii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrasphaera remsis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Tetrasphaera vanveenii | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrasphaera veronensis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Tetrathiobacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Tetrathiobacter kashmirensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Tetrathiobacter mimigardefordensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Texcoconibacillus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Texcoconibacillus texcoconensis T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thalassiella | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thalassiella azotivora T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thalassiella azotovora | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Thalassobacillus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thalassobacillus cyri | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Thalassobacillus devorans T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |