Biota (Life)
Prokaryotes (Prokaryota)
Bacteria (Bacterium)
Posibacteria
Firmicutes (Gram-positive bacteria)
Clostridia
Thermoanaerobacterales
Thermoanaerobacteraceae
Children (2 direct children, 2 direct and indirect children):
Ammonifex degensii
Ammonifex thiophilus