microbacterium petrolearium microbacterium petrolearium microbacterium petrolearium is a gram-positive, rod-shaped and aerobic bacterium from the genus microbacterium which has been isolated from oil-contaminated water from the dagang oilfield in china. microbacterium petrolearium scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: microbacteriaceae genus: microbacterium species: m. petrolearium binomial name microbacterium petroleariumwang et al. 2014 type strain accc 00719jcm 19612lam0410 synonyms "microbacterium huakuii" wang et al. 2013