Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Archaea Woese et al. 1990 [paraphyletic]
               Phylum Euryarchaeota Garrity and Holt 2001
                 Class "Methanomicrobia"
                   Order Methanomicrobialesᵀ Balch and Wolfe 1981
                     Family Methanoregulaceae Sakai et al. 2012
                       Genus Methanoregulaᵀ Bräuer et al. 2011
                         Methanoregula formicica Yashiro et al. 2011