| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Oceanicaulis alexandrii T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanicaulis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibium sediminis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibaculum pacificum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibaculum nanhaiense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibaculum indicum T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibaculum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibacterium hippocampi T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oceanibacterium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occultella glacieicola T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occultella aeris | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occultella | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Ruaniaceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occidentia massiliensis T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occidentia | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Rickettsiaceae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occallatibacter savannae | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occallatibacter riparius T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Occallatibacter | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oblitimonas alkaliphila T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Oblitimonas | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Obesumbacterium proteus T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Obesumbacterium | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Nubsella zeaxanthinifaciens T | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Nubsella | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Novosphingopyxis baekryungensis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Novosphingopyxis | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Novosphingobium umbonatum | Unknown | Valid (ICNP) | Excubia bot about 3 years ago | |
| Novosphingobium taihuense | Unknown | Valid (ICNP) | Excubia bot about 3 years ago |