procaryotes
Count: -
   Domain Archaea Woese et al. 1990
  Count: [g] 2p;8c;12o;20f;68g
     Phylum Euryarchaeota Garrity and Holt 2001
    Count: [g] 7c;9o;15f;46g
       Class Methanococci Boone 2001 nom. inval. see Class Methanococci Boone 2002
      Count: [g] 3o;7f;20g
         Class Methanococci Boone 2001 nom. inval. see Class Methanococci Boone 2002
        Count: [g] 3o;7f;20g
           Order Methanomicrobiales Balch and Wolfe 1981
          Count: -
             Family Methanomicrobiaceae Balch and Wolfe 1981
            Count: [g] 6g
               Genus Methanofollis Zellner et al. 1999
              Count: -