He is in Rustboro city in the Devon corporation place on the second floor back row
yOU ONLY CAN GET A SECOND FOSSIL IF YOU HAVE A CONNECTOR AND A SECOND SAPPHIRE.
No, not all fossils can be found in Omega Ruby or Alpha Sapphire however the fossils that can be found would include the Dome Fossil also known as the Kabuto fossil, Plume Fossil which is the Archen fossil and Armor Fossil which is also the Shieldon fossil can be found in Omega Ruby, the Skull Fossil also known as the Cranidos fossil and Cover Fossil (also known as the Tirtouga fossil) can be found in Alpha Sapphire while the Old Amber Fossil which is the Aerodactyl fossil can be found in both Omega Ruby and Alpha Sapphire.
root fossil is lileep claw fossil is anorith
You can only receive one fossil in sapphire, emerald can get both.
In Pokémon Sapphire, you can choose to revive either the Claw Fossil into Anorith or the Root Fossil into Lileep. The decision is up to personal preference based on which Pokémon you prefer to have on your team.
You'll get an Anorith. CLAW fossil- anorith root fossil-lileep helix fossil- kabuto
in the ground
It is in the Northeast corner of the desert.
The Root fossil is the Pokemon Lileep and the Claw fossil is anorith =D
dig dig dig
If given to the Devon researcher in the Devon corporation the claw fossil can be revived into Anorith.
Well the fossil maniac he doesn't do anything though.