prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval.
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Bacteroidetes" Krieg et al. 2012 stat. inval. see Phylum Bacteroidota Krieg et al. 2021
       Class Bacteroidia Krieg 2012 [monotypic]
         Order Bacteroidales Krieg 2012
           Family Bacteroidaceae Pribram 1933 (Approved Lists 1980)
             1 Genus Acetofilamentum Dietrich et al. 1989
             2 Genus Acetomicrobium Soutschek et al. 1985
             3 Genus Acetothermus Dietrich et al. 1988
             4 Genus Anaerorhabdus Shah and Collins 1986
             5 Genus Bacteroides Castellani and Chalmers 1919 (Approved Lists 1980)
             6 Genus Capsularis Prévot 1938 (Approved Lists 1980) see Genus Prevotella Shah and Collins 1990