the root (no rank)
Eukaryota (domain)
Euglenozoa (kingdom)
Euglenida (phylum)
Euglenales (order)
Euglena (genus)
[hide inferior taxa]
Euglena gracilis (species)
Euglena myxocylindracea (species)
Euglena sp. (species)
Euglena viridis (species)