organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
     Phylum Aphragmabacteria Margulis and Schwartz 1982 see Class Mollicutes Edward and Freundt 1967 (Approved Lists 1980)
       Genus Mycoplasma Nowak 1929 (Approved Lists 1980)
         Mycoplasma gallisepticum Edward and Kanarek 1960 (Approved Lists 1980)