[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Deinococcus-Thermus Weisburg et al. 1989 nom. nud. see Phylum Deinococcota Weisburg et al. 2021
       Class Deinococci Garrity and Holt 2002
         Order Thermales Rainey and da Costa 2002
           Family Thermaceae da Costa and Rainey 2002
             Genus Thermus Brock and Freeze 1969 (Approved Lists 1980)
               1 Thermus aquaticus Brock and Freeze 1969 (Approved Lists 1980)
               2 Thermus antranikianii Chung et al. 2000
               3 Thermus brockianus Williams et al. 1995
               4 Thermus filiformis Hudson et al. 1987
               5 Thermus igniterrae Chung et al. 2000
               6 Thermus oshimai Williams et al. 1996
               7 Thermus scotoductus Kristjansson et al. 1994
               8 Thermus thermophilus (ex Oshima and Imahori 1974) Manaia et al. 1995