procaryotes 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 Methanococci Boone 2001 nom. inval. see Class Methanococci Boone 2002 Order Methanomicrobiales Balch and Wolfe 1981 Family Methanocorpusculaceae Zellner et al. 1989 Genus Methanocorpusculum Zellner et al. 1988