the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Chordata (phylum)
Craniata (subphylum)
Vertebrata (no rank)
Gnathostomata (superclass)
Actinopterygii (class)
Neopterygii (no rank)
Teleostei (no rank)
Siluriformes (order)
Ictaluridae (family)
bullhead catfishes (common name)
[hide inferior taxa]
Ameiurus nebulosus (species)
Ictalurus (genus)