Bacillus stearothermophilus Dataset NCBI Taxonomy Classification phylum Bacillota class Bacilli order Bacillales family Bacillaceae genus Geobacillus species Geobacillus stearothermophilus Name Homonyms Bacillus stearothermophilus 10 Bacillus stearothermophilus Bacillus stearothermophilus Donk 1920 (Approved Lists 1980)