the root (no rank)
Bacteria (domain)
Proteobacteria (phylum)
Betaproteobacteria (class)
Rhodocyclales (order)
Rhodocyclaceae (family)
Azoarcus (genus)
[hide inferior taxa]
Azoarcus anaerobius (species)
Azoarcus evansii (species)
Azoarcus sp. (species)
Azoarcus toluclasticus (species)
Azoarcus tolulyticus (species)
Azoarcus toluvorans (species)
Azospira oryzae (species)