| china | shandong | cycloclasticus sp. py97m | species | 59 | 0 |
| china | shandong | cycloclasticus sp. py97n | species | 2 | 0 |
| italy | sicily autonomous region | cycloclasticus | genus | 0 | 1 |
| italy | tuscany region | uncultured cycloclasticus sp. | species | 2 | 0 |
| japan | fukui prefecture | uncultured cycloclasticus sp. | species | 5 | 0 |
| japan | iwate prefecture | cycloclasticus sp. a5 | species | 1 | 0 |
| mexico | | cycloclasticus endosymbiont of bathymodiolus heckerae | species | 1 | 0 |
| mexico | | cycloclasticus endosymbiont of sponge | species | 2 | 0 |
| nigeria | | uncultured cycloclasticus sp. | species | 1 | 0 |
| spain | galicia | uncultured cycloclasticus sp. | species | 3 | 0 |
| sweden | | uncultured cycloclasticus sp. | species | 1 | 0 |
| tunisia | | uncultured cycloclasticus sp. | species | 1 | 0 |
| united kingdom | england | uncultured cycloclasticus sp. | species | 2 | 0 |
| united kingdom | scotland | cycloclasticus spirillensus | species | 2 | 0 |
| united states | | cycloclasticus pugetii ps-1 | no rank | 1 | 0 |
| united states | georgia | uncultured cycloclasticus sp. | species | 1 | 0 |
| united states | wisconsin | cycloclasticus sp. 44_32_t64 | species | 193 | 0 |
| united states | wisconsin | cycloclasticus sp. 46_120_t64 | species | 16 | 0 |
| united states | wisconsin | cycloclasticus sp. 46_83_sub15_t18 | species | 124 | 0 |
| united states | wisconsin | cycloclasticus sp. phe_18 | species | 127 | 0 |