Procaryotic Genera
   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
       1 Class "Clostridia" "Garrity and Holt 2001" nom. nud. see Class Clostridia Rainey 2010
       2 Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)
       3 Class "Bacilli" "Garrity and Holt 2001" nom. nud. see Class Bacilli Ludwig et al. 2010