the root (no rank)
Bacteria (domain)
Proteobacteria (phylum)
Gammaproteobacteria (class)
Pasteurellales (order)
Pasteurellaceae (family)
Avibacterium (genus)
[hide inferior taxa]
Avibacterium avium (species)
Avibacterium gallinarum (species)
Avibacterium paragallinarum (species)
Avibacterium volantium (species)