Pt 2 for dmcg.   The evidences discredited or dropped..?......there are many but here are a few once used to prove ? Evolutionism.       Piltdown man..........is it Nebraska man that turned out to be the pig tooth.........hacklyes fraudulent drawings .........racist ideas that Negros and aboriginals were inferior to the white man..........vestigial organs (supposedly!). ........junk (supposedly ) DNA .      And specifically in geology the idea that uniformitarianism is the only process forming features........ think you get the idea.   I am sure I will get lots of flak about how science corrects itself,   But I merely answered the challenge!