The only way is to go unerground dig into the walls and you should find one soon i found 5 by the way its a skull fossil. If you find a root fossil you can get a lileep too = )
Underground
Cranidos
you need the skull fossil whic you can get underground
go underground get a skull fossil and get it restored
You get a fossil from underground then you give it to the person in the museum to excavate a fossil. and you will either get a Sheildon or a Cranidos . P.S The museum is in Oreburgh City.
You can get all the fossils underground, except for shieldon or cranidos. You find shieldon if your ID is even and Cranidos is your ID is odd.
I have no clue
First you have to excavate a Skull Fossil in the Underground. Transfer the fossil to your bag, and take it to the mining museum in Oreburgh City. Talk to the man behind the counter, and he will turn the fossil into Cranidos.
get a cranidos fossil underground i dont kno wich fossil just get fossil every once in a while go up and check if fossil is cranidos fossil(warning this may take almost a day mabye a week)
Cranidos is obtained from the Skull Fossil.
You dig for it underground. Look for the skull fossil then give it to the scientist in the museum and come back to him
To get Cranidos, dig up Skull Fossil while you are in Sinnoh Underground and take to the Oreburgh Mining Meseum to have it revived into a Cranidos. To get Shieldon, well, sorry, he's exclusive to Pearl. But of course, I can trade you my Cranidos to get Shieldon.