How can I convince my family that dinosaurs didn't coexist with humans?

Okay so my parents and siblings are christian and they are very closed-minded people, they believe everything the bible says and I believe that the earth is around 4.6 billion years old cuz it's based on fact so therefore i told them I don't believe in Genesis (God forbid I state my opinion to them cuz all i get for doing that is bitched at). They think the earth is only a few thousand years old and that dinosaurs lived with humans which doesnt make sense to me at all, it sounds soo crazy yet they think they're right! What can i say to them that proves the earth is older then what they think it is and humans definitely didn't live during the same era as the dinos? and carbon dating wont help me cuz they are convinced that it is totally inaccurate. I told them dinosaurs and humans lived during completey different eras and when the dinos were alive the oxygen content was a lot higher so humans could not live in that environment and they still believe that. They think it's all bullshit and lies. I need solid facts to back this up...please help!