prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Spirochaetes" Garrity and Holt 2001 [monotypic]
       Class Spirochaetes Cavalier-Smith 2002
         Order Leptospirales Gupta et al. 2014 [monotypic]
           Family Leptospiraceae Hovind-Hougen 1979 (Approved Lists 1980)
             Genus Turneriella Levett et al. 2005