Kingdom Procaryotae Murray 1968 (Approved Lists 1980) see Domain Bacteria Woese et al. 1990
   Division Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980) - gram-positive bacteria see Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
     Class Firmibacteria Murray 1988 see Class Bacilli Ludwig et al. 2010