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)
         1 Order Mycoplasmatales Freundt 1955 (Approved Lists 1980) [monotypic]
         2 Order Entomoplasmatales Tully et al. 1993
         3 Order Acholeplasmatales Freundt et al. 1984 [monotypic]
         4 Order Anaeroplasmatales Robinson and Freundt 1987 [monotypic]
         5 Family "Erysipelotrichaceae" nom. inval., incertae sedis see Family Erysipelotrichaceae Verbarg et al. 2004