| Genus | Species Num | Strain Num | SOURCE |
|---|---|---|---|
| Candidatus Stoquefichus | 1 | 1 | MGYG |
| Candidatus Sulcia | 1 | 3 | HMP |
| Candidatus Vesicomyosocius | 1 | 1 | HMP |
| Capnocytophaga | 3 | 4 | HMP/MGYG |
| Carboxydothermus | 1 | 1 | HMP |
| Cardiobacterium | 2 | 2 | HMP/MGYG |
| Carnobacterium | 1 | 1 | HMP |
| Catenibacterium | 1 | 2 | HMP/MGYG |
| Catenulispora | 1 | 1 | HMP |
| Catonella | 1 | 1 | HMP |