living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990 stat. inval.
       Division Bacteria Murray 1974 nom. vernac. see Domain Bacteria Woese et al. 1990 stat. inval.
         "Gram-negative, chemolithotrophic bacteria"
           "Organisms Metabolizing Sulfur"
             1 Genus Thiobacillus Beijerinck 1904 (Approved Lists 1980)
             2 Genus Sulfolobus Brock et al. 1972 (Approved Lists 1980)
             3 Genus Thiobacterium (ex Janke 1924) La Riviere and Kuenen 1989
             4 Genus Macromonas Utermöhl and Koppe 1924 (Approved Lists 1980)
             5 Genus Thiovulum Hinze 1913 (Approved Lists 1980)
             6 Genus Thiospira Visloukh 1914 (Approved Lists 1980)