the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Tetrapoda (no rank)
Amniota (no rank)
Mammalia (class)
Eutheria (superorder)
Carnivora (order)
Ursidae (family)
Ursus (genus)
Ursus maritimus (species)
polar bear (primary common name)
[show inferior taxa]