dichotomicrobium dichotomicrobium dichotomicrobium is a genus of bacteria from the family of hyphomicrobiaceae. currently there is only one species of this genus known (dichotomicrobium thermohalophilum) dichotomicrobium scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: hyphomicrobiaceae genus: dichotomicrobiumhirsch and hoffman 1989 type species dichotomicrobium thermohalophilum species d. thermohalophilum