Student or Learner
Trace fossils overturn previously held theories.
Here '' overturn'' implays '' to reject, to refute'' the previous theory.
Can I say '' The Shah was overturned by ..., since the word '' overthrow'' is hard to pronounce.
Thank you for your response.
No. You could say "deposed" if you wanted.
Theories, decisions, and judgements are overturned. People are not.
I'm not a teacher, but I write for a living. Please don't ask me about 2nd conditionals, but I'm a safe bet for what reads well in (American) English.