prokaryotes - bacteria see Domain Bacteria Woese et al. 1990 stat. inval. 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 Methanopyri Garrity and Holt 2002 [monotypic] Order Methanopyrales Huber and Stetter 2002 [monotypic] 1 Family Methanopyraceae Huber and Stetter 2002 [monotypic]