| canada | | uncultured faecalibacterium sp. | species | 15 | 0 |
| china | | uncultured faecalibacterium sp. | species | 16 | 0 |
| china | hunan | uncultured faecalibacterium sp. | species | 1 | 0 |
| hungary | | uncultured faecalibacterium sp. | species | 5 | 0 |
| india | kerala | uncultured faecalibacterium sp. | species | 5 | 0 |
| mexico | | uncultured faecalibacterium sp. | species | 2 | 0 |
| mexico | yucatan | uncultured faecalibacterium sp. | species | 1 | 0 |
| south korea | | uncultured faecalibacterium sp. | species | 2 | 0 |
| spain | | uncultured faecalibacterium sp. | species | 4 | 0 |
| sweden | | uncultured faecalibacterium sp. | species | 3 | 0 |
| tanzania | | uncultured faecalibacterium sp. | species | 1 | 0 |
| united kingdom | | uncultured faecalibacterium sp. | species | 155 | 0 |
| united states | | uncultured faecalibacterium sp. | species | 1 | 0 |