the root (no rank)
Eukaryota (domain)
Diplomonadida (order)
Hexamitidae (family)
Giardia (genus)
[hide inferior taxa]
Giardia duodenalis (species)
Giardia intestinalis (species)
Giardia lamblia (species)
Giardia muris (species)
Giardia sp. (species)