[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
     Division Bacteria (Haeckel 1894) see Domain Bacteria Woese et al. 1990
       Methaanproducerende bacteriën [monotypic]
         1 Family Methanbacteriaceae