Which Pokemon do you want
yes
The north-east corner of Orebrough City.
Oreburgh mining museum (Oreburgh city)
you can do the mining museum trick you can check neoseeker for action replay codes
You cannot unless you use cheats (Action Replay)
It is in Orebourgh City.
If you want to get a fossil revived then talk to a scientist near the reception counter.
The Pokemon Aerodactyl can be obtained from the Old Amber. You can find the Old Amber from the Underground. Take it to the Mining Museum in Oreburgh City to obtain Aerodactyl.
You don't get Deoxys from anyone in the mining museum You have to trade it from Diamond/Pearl, or migrate it from Ruby/sapphire/emerald if you went to any of the events.
at the mining museum you can swap your fossils (witch you can dig up underground )for Pokemon.
The Mining Museum is located in the top right corner of Oreburgh City.
There arent any cheats, but after you beat the elite four, you go to the mining museum in oreburgh city. there, you replace the "XXX" with the Pokemon name and number like this: Replace "XXX" with "Bulbasaur001" and I will receive Bulbasuar.