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)
[hide inferior taxa]