the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Dipnoi (infraclass)
Dipneusti (alias)
dipnoans (common name)
lungfishes (common name)
[hide inferior taxa]
Lepidosireniformes (order)