clostridium aurantibutyricum clostridium aurantibutyricum clostridium aurantibutyricum is a species of bacteria in the genus clostridium. clostridium aurantibutyricum scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. aurantibutyricum binomial name clostridium aurantibutyricumhellinger 1944