Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990
     Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)
         Order Mycoplasmatales Freundt 1955 (Approved Lists 1980) [monotypic]
           Family Mycoplasmataceae Freundt 1955 (Approved Lists 1980)
             Genus Haemobartonella Tyzzer and Weinman 1939 (Approved Lists 1980) see Genus Mycoplasma Nowak 1929 (Approved Lists 1980)