the root (no rank)
Bacteria (domain)
Proteobacteria (phylum)
Epsilonproteobacteria (class)
Campylobacterales (order)
Campylobacteraceae (family)
Arcobacter (genus)
[hide inferior taxa]
Arcobacter butzleri (species)
Arcobacter cryaerophilus (species)
Arcobacter nitrofigilis (species)