the root (no rank)
Archaea (domain)
Euryarchaeota (phylum)
Methanomicrobia (class)
Methanomicrobiales (order)
Methanosarcinaceae (family)
[hide inferior taxa]
Methanococcoides burtonii (species)
Methanococcoides methylutens (species)
Methanohalophilus portucalensis (species)
Methanosarcina (genus)
Methanothrix soehngenii (species)