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 Methanosarcinales Boone et al. 2002
                     Family Methanosarcinaceaeᵀ Balch and Wolfe 1981
                       Genus Methanococcoides Sowers and Ferry 1985
                         1 Methanococcoides alaskense Singh et al. 2005
                         2 Methanococcoides burtonii Franzmann et al. 1993
                         3 Methanococcoides methylutens Sowers and Ferry 1985
                         4 Methanococcoides vulcani L’Haridon et al. 2014