You can't. In ruby and sapphire you can only get one of the fossils.
there are different Pokemon in it
It is lileep.
it is in the top right of the desert. you can choose between it and the claw fossil
you can revive it to get an anorith. the root fossil will give you lileep.
in the desert wear your go goggles
u simply take it to a sientist in mr.stones building
To get a Lileep in Pokemon Ruby, Sapphire and Emerald you need to revive a Root Fossil. The Root Fossil can be found on Route 111 however choosing it will cost you the ability to get the Claw Fossil. Alternatively you can trade for a Lileep from another game if you've picked the Claw Fossil.
I have Pokemon Sapphire, but it's the same thing in both games. There are two fossils, one is the root fossil and one is the claw fossil. The root fossil will get you a Lileep (which then evolves into a Cradily at lvl40) and the claw fossil will get you an Anorith (which also evolves at lvl40 to give you an Armaldo). Hope that helps!!
Lilleep comes from it, which evolves into a Cradily. The other fossil has an Anorith, which evolves into an Armaldo. Good luck, Trainer!
A Root Fossil is a fossil in Pokémon Ruby/Sapphire/Emerald, and is the counterpart of the Claw Foosil. The Pokémon that it turns into is a Lileep. A Lileep is some kind of water plant and to be honest, I'm not sure what type it is but I'm pretty sure that water is super effective against it.
As soon as you give it leave the whole building go back inside talk to the guy who took the fossil to receive your very own Lileep(root fossil) or Anorith(claw fossil).
The Claw fossil