porphyromonas catoniae porphyromonas catoniae porphyromonas catoniae is a gram-negative and anaerobic bacterium from the genus of porphyromonas which has been isolated from the human gingival crevice. porphyromonas catoniae scientific classification domain: bacteria phylum: bacteroidota class: bacteroidia order: bacteroidales family: porphyromonadaceae genus: porphyromonas species: p. catoniae binomial name porphyromonas catoniae(moore and moore 1994) willems and collins 1995 type strain atcc 51270, ccug 41358, jcm 13863, nctc 13056, vpi n3b-3 synonyms oribaculum catoniae