"Bacillus thetaiotaomicron" Distaso 1912 Dataset NCBI Taxonomy Classification phylum Bacteroidota class Bacteroidia order Bacteroidales family Bacteroidaceae genus Bacteroides species Bacteroides thetaiotaomicron Name Homonyms Bacillus thetaiotaomicron "Bacillus thetaiotaomicron" Distaso 1912