the root (no rank)
Bacteria (domain)
Firmicutes (phylum)
Clostridia (class)
Thermoanaerobacteriales (order)
Thermoanaerobacteriaceae (family)
[hide inferior taxa]
Acetogenium kivui (species)
Desulfotomaculum thermobenzoicum (species)
Moorella (genus)
Thermoanaerobacter (genus)