[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain "Archaea" Woese et al. 1990
     Phylum "Euryarchaeota" Garrity and Holt 2001
       Class Methanopyri Garrity and Holt 2002
         Order Methanopyrales Huber and Stetter 2002
           Family Methanopyraceae Huber and Stetter 2002
             1 Genus Methanopyrus Kurr et al. 1992