cyclobacterium jeungdonense cyclobacterium jeungdonense cyclobacterium jeungdonense is a horseshoe-shaped bacterium from the genus of cyclobacterium which has been in korea. cyclobacterium jeungdonense scientific classification domain: bacteria phylum: bacteroidota class: cytophagia order: cytophagales family: cyclobacteriaceae genus: cyclobacterium species: c. jeungdonense binomial name cyclobacterium jeungdonensejoung et al. 2014 type strain cect 7706, hmd3055, kctc 23150