What is the classification level of aureus for organism staphylococcus aureus?
"Aureus" is not a classification level; it is a species name within the Staphylococcus genus. The classification levels for organisms are Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. Staphylococcus aureus belongs to the domain Bacteria, the phylum Firmicutes, the class Bacilli, the order Bacillales, the family Staphylococcaceae, the genus Staphylococcus, and the species aureus.