| Species | RefIntense Num | Refseq Num | Source |
|---|---|---|---|
| Cloacibacillus porcorum | 1 | 2 | MGYG |
| Clostridioides difficile | 13 | 2282 | HMP/MGYG |
| Clostridium baratii | 1 | 14 | MGYG |
| Clostridium beijerinckii | 1 | 237 | HMP |
| Clostridium butyricum | 2 | 55 | HMP/MGYG |
| Clostridium cadaveris | 1 | 7 | MGYG |
| Clostridium carboxidivorans | 1 | 3 | HMP |
| Clostridium celatum | 1 | 4 | MGYG |
| Clostridium cochlearium | 1 | 11 | MGYG |
| Clostridium disporicum | 1 | 4 | MGYG |