[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 Mycoplasmatales Freundt 1955 (Approved Lists 1980)
           Family Mycoplasmataceae Freundt 1955 (Approved Lists 1980)
             1 Genus Mycoplasma Nowak 1929 (Approved Lists 1980)
             1.1 Genus Eperythrozoon Schilling 1928 (Approved Lists 1980)
             1.2 Genus Haemobartonella Tyzzer and Weinman 1939 (Approved Lists 1980) see Genus Mycoplasma Nowak 1929 (Approved Lists 1980)
             2 Genus Allobaculum Greetham et al. 2006
             3 Genus Ureaplasma Shepard et al. 1974 (Approved Lists 1980)