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)
Artiodactyla (order)
Suina (suborder)
Hippopotamidae (family)
Hippopotamus amphibius (species)
hippopotamus (primary common name)
[hide inferior taxa]