dorea longicatena dorea longicatena dorea longicatena is a gram-positive, obligately anaerobic, non-spore-forming and rod-shaped bacterium from the genus of dorea which has been isolated from human feces in germany. dorea longicatena scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: lachnospiraceae genus: dorea species: d. longicatena binomial name dorea longicatenataras et al. 2002 type strain ccug 45247, dsm 13814, iii-35, jcm 11232