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
           1 Family Entomoplasmataceae Tully et al. 1993
           2 Family Spiroplasmataceae (ex Skripal' 1974) Skripal' 1983 [monotypic]