Firmicutes
Clostridiobacteria
Clostridiaceae
Clostridium bifermentans
Clostridium butyricum 1
Clostridium butyricum 2
Clostridium carnis
Clostridium pasteurianum
Clostridium tyrobutyricum 1
Clostridium tyrobutyricum 2
Clostridium tyrobutyricum 3
Clostridium tyrobutyricum 4