the root (no rank)
Eukaryota (domain)
Heterolobosea (phylum)
Schizopyrenida (order)
Naegleria (genus)
[hide inferior taxa]
Naegleria andersoni (species)
Naegleria clarki (species)
Naegleria fowleri (species)
Naegleria gruberi (species)
Naegleria italica (species)
Naegleria jamiesoni (species)