the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Sarcopterygii (class)
Dipnoi (infraclass)
Lepidosireniformes (order)
Protopteridae (family)
Protopterus (genus)
[hide inferior taxa]
Protopterus aethiopicus (species)
Protopterus annectens (species)
Protopterus dolloi (species)
Protopterus sp. (species)