[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 "Methanomicrobia"
         Order Methanomicrobiales Balch and Wolfe 1981
           Family Methanomicrobiaceae Balch and Wolfe 1981
             Genus Methanoplanus Wildgruber et al. 1984
               Methanoplanus petrolearius Ollivier et al. 1998 see Methanolacinia petrolearia (Ollivier et al. 1997) Göker et al. 2015