| Reported in | Status | Registered by | ||
|---|---|---|---|---|
| Cricetibacter | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Cribrihabitans pelagius | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Cribrihabitans neustonicus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Cribrihabitans marinus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Cribrihabitans | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crenobacter luteus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crenobacter cavernae | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crenobacter | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crenalkalicoccus roseus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crenalkalicoccus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Craurococcus roseus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Craurococcus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Craterilacuibacter sinensis T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Craterilacuibacter | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crateriforma conspicua T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crateriforma | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crassaminicella profunda T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Crassaminicella | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Coxiella burnetii T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Coxiella | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Couchioplanes caeruleus subsp. caeruleus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Couchioplanes caeruleus subsp. azureus | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Couchioplanes caeruleus T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Couchioplanes | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Costertonia aggregata T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Costertonia | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Cosenzaea myxofaciens T | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Cosenzaea | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Corynebacterium yudongzhengii | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago | |
| Corynebacterium xerosis | Unknown | Valid (ICNP) | Excubia bot almost 3 years ago |