[XY] Can some one help me for more fossils?

[ChubbiPenguin]

I don't have them myself, but have you tried looking them up on GTS? If there aren't any available for something else than Mew and Deoxis (-_-). Try setting up an offer yourself, deposit a pokemon in the GTS and wait for someone to trade you. If you don't have anything interesting to trade try making a baby of your starter, usually people go nuts for those