Procaryotic Genera
   Domain "Archaea" Woese et al. 1990
     Phylum Crenarchaeota Garrity and Holt 2001 [monotypic]
       Class Thermoprotei Reysenbach 2001 see Class Thermoprotei Reysenbach 2002
         Order Desulfurococcales Huber and Stetter 2001 nom. inval. see Order Desulfurococcales Huber and Stetter 2002
           Family Desulfurococcaceae Zillig and Stetter 1983
             1 Genus Desulfurococcusᵀ Zillig and Stetter 1983
             2 Genus Acidolobus
             3 Genus Aeropyrum Sako et al. 1996
             4 Genus Ignicoccus Huber et al. 2000
             5 Genus Staphylothermus Stetter and Fiala 1986
             6 Genus Stetteria Jochimsen et al. 1998
             7 Genus Sulfophobococcus Hensel et al. 1997
             8 Genus Thermodiscus Stetter, 2003 see Genus Thermodiscus Stetter 2003
             9 Genus Thermosphaera Huber et al. 1998