you have to mine it out
go strate down from the town with the dialga statue
Once you have the Cave Explorer kit, go underground and start mining until you find a Skull Fossil. Bring the fossil to the museum in Oreburgh City for defossilization.
No.
it is the fossil you didn't get in the desert
I found pone above mt.coronet cave of ferity pone activates barboach to a Pokemon (like a fossil with cranidos)
The Fossils in Pokémon Diamond are the Helix Fossil which is the Omanyte Fossil, the Dome Fossil which is the Kabuto Fossil, the Old Amber which is the Aerodactyl Fossil, the Root Fossil which is the Lileep Fossil, the Claw Fossil which is the Anorith Fossil, the Skull Fossil which is the Cranidos Fossil and the Armor Fossil which is the Shieldon Fossil.
You get the fossil in pearl and trade it to diamond
No
Its a sheildon fossil
You have to get the the National Dex (beat the Elite Four) before you can go into the Fossil Maniac's cave.
a cave
Sell it