Archaea  >  Methanobacteriati  >  Methanobacteriota  >  Methanomicrobia  >  Methanomicrobiales

Family	Genus	Species
Methanocalculaceae	1	66
Methanocorpusculaceae	2	35
Methanomicrobiaceae	8	398
Methanoregulaceae	3	84
Methanosphaerulaceae	0	1
Methanospirillaceae	2	31