prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 Domain "Bacteria" Woese et al. 1990 Phylum "Bacteroidetes" Krieg et al. 2012 Class Bacteroidia Krieg 2012 [monotypic] Order Bacteroidales Krieg 2012 Family Bacteroidaceae Pribram 1933 (Approved Lists 1980) Genus Capsularis Prévot 1938 (Approved Lists 1980) see Genus Prevotella Shah and Collins 1990