Fossils

Go to Oreburgh city and into the mining museam. Talk to 1 of the guys at the desk and he will turn you're fossil into a pokemon. P.s. Get rid of all your fossils but 1 because you only get 1 different Pokemon from a fossil. Hope this helps.

Go to Orebourg city and go to the museum. Make sure you have enough spots for all your fossils once they become pokemon. Talk to the scientist at the counter and give him one of your fossils. Step outside then right back inside. Talk to the scientist and he should give you a revived ancient pokemon.

Go to oreburgh,then the mining museum,talk to the scientist on the right of the entrance(inside)he say what fossils you have that he can revive.give him a fossil and walk outside,and out.make sure you have 5 or lees Pokemon in your party before you retrieve your fossil.they'll emerge at level 20.
Hope this helps!

Here is how you can revive your fossils back into Pokemon. First, leave the Sinnoh Underground after you have a lot of fossils. Second, after you leave the underground, fly to Oreburgh City, the mining city. Third, once you arrive in Oreburgh City, head to the Rock museum there. Fourth, after you go inside of the rock Museum, talk to one of the people at the main counter. Once you do that, you just need to find the right person in the museum who will revive your fossils. After you hand over one of your fossils to the person, walk outside of the museum, then go back in. That should have been enough time for your Fossil to be revived.

Hope this helps.