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)
Prototheria (superorder)
Monotremata (order)
egg-laying mammals (common name)
[hide inferior taxa]
Ornithorhynchidae (family)
Tachyglossidae (family)