brachybacterium massiliense brachybacterium massiliense "brachybacterium massiliense" is a species of gram positive bacterium. it was first isolated from a stool sample of 38-month-old healthy girl from senegal. the species was first proposed in 2017, and the name is derived from massilia, the roman name for marseille, the location of the laboratory where b. massiliense was first isolated. brachybacterium massiliense scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: dermabacteraceae genus: brachybacterium species: b. massiliense binomial name brachybacterium massiliensetidjani-alou et al. 2017 synonyms "brachybacterium massiliense" mekhalif et al. 2019