[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain "Archaea" Woese et al. 1990
     Phylum "Crenarchaeota" Garrity and Holt 2001
       Class Thermoprotei Reysenbach 2002
         Order Desulfurococcales Huber and Stetter 2002
           1 Family Desulfurococcaceae Zillig and Stetter 1983
           2 Family Pyrodictiaceae Burggraf et al. 1997