the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Actinopterygii (class)
Acipenseriformes (order)
Acipenseridae (family)
Acipenser (genus)
Acipenser baerii (species)
Acipenser baeri (alias)
[hide inferior taxa]
Acipenser baerii baerii (subspecies)