prokaryotes - bacteria see Domain Bacteria Woese et al. 1990
   Domain "Bacteria" Woese et al. 1990
     Phylum "Tenericutes" Murray 1984 [monotypic] see Phylum Firmicutes corrig. Gibbons and Murray 1978 (Approved Lists 1980)
       Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)
         Order Entomoplasmatales Tully et al. 1993
           Family Entomoplasmataceae Tully et al. 1993
             Genus Mesoplasma Tully et al. 1993