Bacteroides fragilis subsp. thetaiotaomicron Dataset NCBI Taxonomy Classification phylum Bacteroidota class Bacteroidia order Bacteroidales family Bacteroidaceae genus Bacteroides species Bacteroides thetaiotaomicron Name Homonyms Bacteroides fragilis subsp. thetaiotaomicron "Bacteroides fragilis subsp. thetaiotaomicron" (Distaso 1912) Holdeman and Moore 1970