Archaea  >  Methanobacteriati  >  Methanobacteriota  >  Methanomicrobia

Order	Family	Genus	Species
Candidatus Alkanophagales	0	1	3
Candidatus Methanophagales	2	3	19
Methanocellales	1	2	14
Methanomicrobiales	6	16	725
Methanosarcinales	5	20	495
Methanotrichales	1	2	337