| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Syntrophococcus sucromutans T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophococcus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobotulus glycolicus T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobotulus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobacter wolinii T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobacter sulfatireducens | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobacter pfennigii | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobacter fumaroxidans | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophobacter | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophaceticus schinkii T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Syntrophaceticus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Synergistes jonesii T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Synergistes | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symmachiella macrocystis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symmachiella dynata T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symmachiella | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symbiobacterium turbinis | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symbiobacterium thermophilum T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symbiobacterium terraclitae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symbiobacterium ostreiconchae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symbiobacterium | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Symbiobacteriaceae | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Swionibacillus sediminis T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Swionibacillus | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Swingsia samuiensis T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Swingsia | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Swaminathania salitolerans T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Swaminathania | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Suttonella ornithocola | Unknown | Valid (ICNP) | Excubia bot about 5 years ago | |
| Suttonella indologenes T | Unknown | Valid (ICNP) | Excubia bot about 5 years ago |