prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Firmicutes" corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class Bacilli Ludwig et al. 2010
         Order Bacillales Prévot 1953 (Approved Lists 1980)
           Family Listeriaceae Ludwig et al. 2010
             1 Genus Brochothrix Sneath and Jones 1976 (Approved Lists 1980)
             2 Genus Listeria Pirie 1940 (Approved Lists 1980)