Related how?

Biota (Life)
Prokaryotes (Prokaryota)
Archaea (Archaebacteria)
Euryarchaeota
Methanomicrobia
Methanomicrobiales
Methanospirillaceae

Methanospirillum (4044149)

Children (4 direct children, 4 direct and indirect children):

Methanospirillum hungatei

Methanospirillum lacunae

Methanospirillum stamsii

Methanospirillum psychrodurum