thermoflavimicrobium thermoflavimicrobium thermoflavimicrobium is a gram-positive, thermophilic, aerobic and chemoorganotroph bacterial genus from the family of thermoactinomycetaceae. up to now there is only one species of this genus known (thermoflavimicrobium dichotomicum). thermoflavimicrobium scientific classification domain: bacteria phylum: bacillota class: bacilli order: bacillales family: thermoactinomycetaceae genus: thermoflavimicrobiumyoon et al. 2005 type species thermoflavimicrobium dichotomicum species t. dichotomicum