| china | | uncultured simkania sp. | species | 1 | 0 |
| china | hunan | uncultured simkania sp. | species | 66 | 0 |
| india | karnataka | uncultured candidatus fritschea sp. | species | 3 | 0 |
| japan | hokkaido prefecture | uncultured simkania sp. | species | 6 | 0 |
| japan | miyazaki prefecture | uncultured simkania sp. | species | 1 | 0 |
| mexico | | uncultured simkania sp. | species | 1 | 0 |
| mexico | | uncultured simkaniaceae bacterium | species | 1 | 0 |
| namibia | | uncultured simkania sp. | species | 1 | 0 |
| nigeria | | uncultured simkania sp. | species | 2 | 0 |
| norway | | candidatus syngnamydia salmonis | species | 23 | 0 |
| norway | | uncultured simkaniaceae bacterium | species | 1 | 0 |
| poland | | uncultured simkania sp. | species | 1 | 0 |
| spain | | uncultured simkania sp. | species | 8 | 0 |
| spain | | uncultured simkaniaceae bacterium | species | 2 | 0 |
| united kingdom | england | simkania | genus | 0 | 1 |
| united kingdom | scotland | uncultured simkania sp. | species | 1 | 0 |
| united states | | uncultured simkania sp. | species | 1 | 0 |
| united states | california | simkania negevensis | species | 1 | 0 |
| united states | new york | simkania | genus | 0 | 1 |
| united states | new york | simkania negevensis | species | 0 | 1 |
| united states | north carolina | uncultured simkania sp. | species | 2 | 0 |