Procaryotic Genera
   Domain "Bacteria" Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Deinococcus-Thermus" Weisburg et al. 1989 nom. nud. [monotypic] see Phylum Deinococcota Weisburg et al. 2021
       Class Deinococci Garrity and Holt 2001 nom. inval. see Class Deinococci Garrity and Holt 2002
         Order Thermales Rainey and da Costa 2001 nom. inval. [monotypic] see Order Thermales Rainey and da Costa 2002
           Family Thermaceae da Costa and Rainey 2001 nom. inval. see Family Thermaceae da Costa and Rainey 2002
             Genus Thermusᵀ Brock and Freeze 1969 (Approved Lists 1980)