Things You'll Need
Instructions
Enter Mirage Tower. Go east and then north to reach the ladder to the next floor.
Go west until you see the cracked tiles.
Get on the Mach Bike by selecting it from your inventory menu.
Ride the bike south over the cracked tiles.
Go east along the path to reach the ladder to the next floor.
Go west and north until you reach two darker-colored rocks.
Use Rock Smash to destroy the rocks. Head up the ladder right behind the rocks to reach the top floor.
Use Rock Smash to destroy the rock in front of the stairs.
Examine one of the fossils to pick it up. The Root Fossil on the left can be turned into Lileep. The Claw Fossil on the right can be turned into Anorith.