| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Ottowia flava | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Ottowia beijingensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Ottowia | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Otariodibacter oris T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Otariodibacter | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oscillochloris trichoides | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oscillochloris | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oscillochloridaceae | ||||
| Oscillibacter valericigenes T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oscillibacter ruminantium | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oscillibacter | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzomonas sagensis | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzomonas rubra | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzomonas japonica T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzomonas | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzomicrobium terrae T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzomicrobium | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzobacter terrae T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzobacter | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzisolibacter propanilivorax T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzisolibacter | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzihumus terrae | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzihumus soli | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzihumus leptocrescens T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Oryzihumus | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Orrella dioscoreae T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Orrella amnicola | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Orrella | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Ornithobacterium rhinotracheale T | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago | |
| Ornithobacterium | Unknown | Valid (ICNP) | Excubia bot almost 5 years ago |