prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
Count: [*] 34p;74c;164o;358f;2552g [13 Sep 2017]
   Domain "Bacteria" Woese et al. 1990
  Count: [*] 29p;64c;145o;326f;2423g [13 Sep 2017]
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
    Count: [*] 7c;50o;130f;1084g [13 Sep 2017]
       Class Alphaproteobacteria Garrity et al. 2006
      Count: [*] 11o;30f;390g [11 Sep 2017]
         Order Rickettsiales Gieszczykiewicz 1939 (Approved Lists 1980)
        Count: [*] 3f;13g [11 Sep 2017]
           Family Rickettsiaceae Pinkerton 1936 (Approved Lists 1980)
          Count: [*] 2g [11 Sep 2017]
             1 Genus Orientia Tamura et al. 1995
            Count: -
             2 Genus Rickettsia da Rocha-Lima 1916 (Approved Lists 1980)
            Count: -