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A pseudobulge is a like a galaxy bulge only flatter, more disk-like. (When discussing both, sometimes an "ordinary" bulge is referred to as a classic bulge.) Pseudobulges tend to have some structure rather than being just being a lump of stars, sometimes showing a spiral, like a miniature spiral galaxy. Such a structure may also be found within a classic bulge, as if the galaxy has both a classic bulge and pseudobulge overlaid. Pseudobulges also tend to show star formation whereas classic bulges are more likely to have little and consist of Population II stars.