"Romboutsia faecis" Liu et al. 2021 Dataset NCBI Taxonomy Classification phylum Bacillota class Clostridia order Peptostreptococcales family Peptostreptococcaceae genus Romboutsia species Romboutsia faecis Name Homonyms Romboutsia faecis Romboutsia faecis Liu et al. 2022 "Romboutsia faecis" Liu et al. 2021