GenusFaecalibacterium
| Taxon: | Rank: |
| Faecalibacterium duncaniae | species |
| Faecalibacterium gallinarum | species |
| Faecalibacterium hattorii | species |
| Faecalibacterium prausnitzii | species |
| Taxon: | Rank: |
| Faecalibacterium duncaniae | species |
| Faecalibacterium gallinarum | species |
| Faecalibacterium hattorii | species |
| Faecalibacterium prausnitzii | species |