| australia | | uncultured rikenellaceae bacterium | species | 1 | 0 |
| china | | uncultured rikenellaceae bacterium | species | 10 | 0 |
| costa rica | | uncultured rikenellaceae bacterium | species | 12 | 0 |
| japan | hokkaido prefecture | uncultured rikenellaceae bacterium | species | 2 | 0 |
| mexico | yucatan | uncultured rikenellaceae bacterium | species | 1 | 0 |
| norway | | uncultured rikenellaceae bacterium | species | 3 | 0 |
| south africa | | uncultured rikenellaceae bacterium | species | 2 | 0 |
| spain | | uncultured rikenellaceae bacterium | species | 19 | 0 |
| united states | massachusetts | uncultured rikenellaceae bacterium | species | 1 | 0 |