Sturdy Fossil

Sturdy Fossils are used to make the Fossil Armor, Bone Throwing Knife, Amber Staff, and Bone Javelin. Sturdy Fossils are made by putting Desert Fossils in the Extractinator, with about a 13.8% chance of being acquired. Sturdy Fossils can also be obtained from Basilisks. It requires at least a Deathbringer Pickaxe or a Nightmare Pickaxe to mine.