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 "Firmicutes" (Gibbons and Murray 1978) Garrity and Holt 2001 stat. inval. see Phylum Bacillota Gibbons and Murray 2021
       Class Clostridia Rainey 2010
         Order Clostridiales Prévot 1953 (Approved Lists 1980) see Order Eubacteriales Buchanan 1917 (Approved Lists 1980)
           Family Eubacteriaceae Ludwig et al. 2010
             1 Genus Acetobacterium Balch et al. 1977 (Approved Lists 1980)
             2 Genus Alkalibacter Garnova et al. 2005
             3 Genus Alkalibaculum Allen et al. 2010
             4 Genus Aminicella corrig. Ueki et al. 2015
             5 Genus Anaerofustis Finegold et al. 2004
             6 Genus Eubacterium Prévot 1938 (Approved Lists 1980)
             7 Genus Garciella Miranda-Tello et al. 2003
             8 Genus Pseudoramibacter Willems and Collins 1996