@Olivier5,
1.) It is customary when you are not using your own words to qoute the reference.
2.) Wikipedia? I'm not surprised. Garbage in, garbage out. (unless you misquoted it)
The definition of supercede is to subplant or replace something. Relativety did not replace classical physics any more so than quantum mecahnics replaced realtivity.
The only thing that changed was the undersatnding that there is not one all encompassing rule of physics...or a GUT. Nothing was disproved or superceded. We have just expanded the understanding.
Hope that wasnt too dumbed down.