Can you get both fossils in Omega Ruby?

In Pokemon Omega Ruby and Alpha Sapphire, you can find a Root Fossil or Claw Fossil in the desert area of Route 111. Only one can be chosen, and the other will be lost forever.

Can you get both bikes in Sapphire?

Pokémon Omega Ruby & Alpha Sapphire, like the originals, actually provides two different bikes. As there are only two bikes in the game, you can only have one and need to go back to Mauville City in order to switch bikes, at least at first.