[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain "Archaea" Woese et al. 1990 stat. inval. see Domain Archaea Woese et al. 2024
     Phylum "Euryarchaeota" Garrity and Holt 2002 stat. inval. see Kingdom Methanobacteriati (Garrity and Holt 2023) Oren and Göker 2024
       Class "Methanomicrobia" Garrity et al. 2005 nom. inval.
         Order Methanomicrobiales Balch and Wolfe 1981
           Family Methanocorpusculaceae Zellner et al. 1989
             Genus Methanocorpusculum Zellner et al. 1988
               Methanocorpusculum aggregans (Ollivier et al. 1985) Xun et al. 1989