Ruminococcus callidus Holdeman and Moore 1974 (Approved Lists 1980) Dataset NCBI Taxonomy Classification phylum Bacillota class Clostridia order Eubacteriales family Oscillospiraceae genus Ruminococcus species Ruminococcus callidus Name Homonyms Ruminococcus callidus Ruminococcus callidus Holdeman and Moore 1974 (Approved Lists 1980)