| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Sinibacillus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Singulisphaera rosea | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Singulisphaera acidiphila T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Singulisphaera | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simulacricoccus ruber T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simulacricoccus | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira suum | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira soli | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira psychrophila | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira piscis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira metamorpha T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira limi | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira lacusdiani | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simplicispira | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simonsiella muelleri T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simonsiella | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simkania negevensis T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simkania | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia thermophila | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia terrae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia sediminis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia fortis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia fordii T | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia farraginis | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia composti | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia acidinfaciens | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Siminovitchia | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simiduia litorea | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simiduia curdlanivorans | Unknown | Valid (ICNP) | Excubia bot over 4 years ago | |
| Simiduia areninigrae | Unknown | Valid (ICNP) | Excubia bot over 4 years ago |