[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   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)
         2 Order Entomoplasmatales Tully et al. 1993
         3 Order Acholeplasmatales Freundt et al. 1984
         4 Order Anaeroplasmatales Robinson and Freundt 1987
         5 Family Erysipelotrichaceae Verbarg et al. 2004