life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokarya see Domain Bacteria Woese et al. 1990 stat. inval.
     Kingdom Bacteria Cavalier-Smith 1998 nom. inval. - bacteria see Kingdom Bacteria Cavalier-Smith 2002 stat. inval.
       Subkingdom Eubacteria Cavalier-Smith 1981 see Domain Bacteria Woese et al. 1990 stat. inval.
         Division Gracilicutes Gibbons and Murray 1978 (Approved Lists 1980) see Phylum Gracilicutes
           Phylum Proteobacteria Garrity and Holt 2001 nom. nud. see Phylum Proteobacteria Garrity et al. 2005 stat. inval.
             "Beta Group" see Class Betaproteobacteria Garrity et al. 2006
               Genus Thiobacillus Beijerinck 1904 (Approved Lists 1980)
                 Thiobacillus ferrooxidans Temple and Colmer 1951 (Approved Lists 1980) see Acidithiobacillus ferrooxidans (Temple and Colmer 1951) Kelly and Wood 2000