clostridium cochlearium clostridium cochlearium clostridium cochlearium is a bacterium from the genus clostridium. clostridium cochlearium scientific classification domain: bacteria phylum: bacillota class: clostridia order: eubacteriales family: clostridiaceae genus: clostridium species: c. cochlearium binomial name clostridium cochlearium(douglas et al. 1919) bergey et al. 1923 synonyms bacillus cochlearius clostridium lentoputrescens