Related how?
Biota
(Life)
Prokaryotes
(Prokaryota)
Archaea
(Archaebacteria)
Euryarchaeota
Methanobacteria
Methanobacteriales
Methanothermaceae (
6823606
)
Children (1 direct children, 4 direct and indirect children):
Methanothermus
(tree size 3)