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)
Sauropsida (no rank)
Sauria (no rank)
Archosauria (no rank)
Aves (class)
Neognathae (superorder)
Sphenisciformes (order)
Spheniscidae (family)
Aptenodytes (genus)
Aptenodytes forsteri (species)
emperor penguin (primary common name)
[hide inferior taxa]