Which oxygen ion is present in an ordinary oxide?

In an ordinary oxide, the oxygen is present as the oxide ion, which is represented as ${\text{O}}^{2-}$.123

While oxygen can form other species—such as peroxides containing the ${\text{O}}_2^{2-}$ ion or superoxides containing the ${\text{O}}_2^{-}$ ion—these are distinct from ordinary oxides. In the crystalline structure of ionic metal oxides, the ${\text{O}}^{2-}$ anion is the characteristic component.132