[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)
         Order Entomoplasmatales Tully et al. 1993
           Family Entomoplasmataceae Tully et al. 1993
             Genus Mesoplasma Tully et al. 1993
               Mesoplasma lactucae (Rose et al. 1990) Tully et al. 1993