the root (no rank)
Archaea (domain)
Euryarchaeota (phylum)
Methanobacteriales (order)
Methanobacteriaceae (family)
Methanobrevibacter (genus)
[hide inferior taxa]
Methanobrevibacter arboriphilus (species)
Methanobrevibacter oralis (species)
Methanobrevibacter ruminantium (species)
Methanobrevibacter smithii (species)
uncultured Methanobrevibacter sp. (species)