"Caecibacter massiliensis" Ricaboni et al. 2017 Dataset NCBI Taxonomy Classification phylum Bacillota class Negativicutes order Veillonellales family Veillonellaceae genus Caecibacter species Caecibacter massiliensis Name Homonyms Caecibacter massiliensis "Caecibacter massiliensis" Ricaboni et al. 2017