the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Tetrapoda (no rank)
Amphibia (class)
Caudata (order)
Amphiumidae (family)
Amphiuma (genus)
Amphiuma means (species)
two-toed amphiuma (primary common name)
[show inferior taxa]