go to the man on the east side of the first city
The dome fossil is only in firered and leafgreen, you can get the claw fossil or some other fossil, the claw fossil is anorith the other one is lileep.
The Claw fossil
In the dessert
there are different Pokemon in it
you can revive it to get an anorith. the root fossil will give you lileep.
it is in the top right of the desert. you can choose between it and the claw fossil
in the desert wear your go goggles
it is right side
You can find the Claw and Root fossil on Route 111, but you can choose only one.
you cant find metal claw
dont worry about that, you will still can get claw fossil after you beat the elite four. You can find it at fossil's maniac house. When you reach there, go inside. He will tell you that it is dangerous inside the hole that he dig. Dont worry, there is only a lot of ditto inside. You keep head east inside the hole till you found the fossil.
No you can't. You can only get it in Soul Silver. Instead you find a Claw fossil in the place where you would find the root fossil- Cliff Cave. You cannot find a Claw fossil in Soul Silver.