Prevotella nigrescens NCTC 9336 Dataset NCBI Taxonomy Classification phylum Bacteroidota class Bacteroidia order Bacteroidales family Prevotellaceae genus Prevotella species Prevotella nigrescens Name Homonyms Prevotella nigrescens Prevotella nigrescens NCTC 9336 Prevotella nigrescens JCM 12250 Prevotella nigrescens Shah and Gharbia 1992 emend. Hahnke et al. 2016