The Sail Fossil can be revived in the Pokémon Lab located in Ambrette Town.
|XY||A fossil from a prehistoric Pokémon that once lived on land. It looks like the impression from a skin sail.|
Related ThreadsJaw or sail fossil - last post by @ Oct 15, 2013
can you get both kalos fossils in one game? - last post by @ Nov 19, 2013