Sturdy Fossil

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Desktop/Console/Mobile-Only Content: This information applies only to the Desktop, Console, and Mobile versions of Terraria.
Sturdy Fossil
  • Sturdy Fossil item sprite
  • Sturdy Fossil placed
Stack digit 9.pngStack digit 9.pngStack digit 9.pngStack digit 9.png
Placeable✔️ (1 wide × 1 high)
Use time15 (Very fast)
RarityRarity level: 1
Research100 required
  • Internal Item ID: 3380 (Desktop, Console and Mobile versions)
  • Internal Tile ID: 407
Obtained from Obtained from Obtained from
Classic mode icon.png Classic
Expert mode icon.png Expert
Master mode icon.png Master
Basilisk(Desktop, Console and Mobile versions)Basilisk.gifBasilisk(Desktop, Console and Mobile versions)1–3100%
Mirage Crate(Desktop, Console and Mobile versions)Mirage CrateMirage Crate(Desktop, Console and Mobile versions)10–161/2 (50%)
Oasis Crate(Desktop, Console and Mobile versions)Oasis CrateOasis Crate(Desktop, Console and Mobile versions)10–161/2 (50%)
Tomb Crawler(Desktop, Console and Mobile versions)Tomb CrawlerTomb Crawler(Desktop, Console and Mobile versions)1–250%
This article is about the crafting material. For the naturally occurring block, see Desert Fossil.

Sturdy Fossils are crafting materials used to make the Fossil armor, Bone Throwing Knife, Amber Staff, Scarab Bomb and Bone Javelin. Sturdy Fossils are obtained by putting Desert Fossils in the Extractinator, with a 10% chance of acquiring a Sturdy Fossil from each Desert Fossil.

Placed Sturdy Fossils sparkle when an ore-detecting item is used. Placed Sturdy Fossils also show up when a Metal Detector is used, even though they do not spawn naturally.

Sturdy Fossils can also be obtained from Tomb Crawlers, Basilisks, Oasis Crates, and Mirage Crates.


Used in

ResultIngredientsCrafting station
Scarab BombScarab Bomb(Desktop, Console and Mobile versions)By Hand
Amber StaffAmber Staff(Desktop, Console and Mobile versions)Iron AnvilIron Anvil
Lead AnvilLead Anvil
Bone JavelinBone Javelin(Desktop, Console and Mobile versions)20
Bone Throwing KnifeBone Throwing Knife(Desktop, Console and Mobile versions)30
Fossil GreavesFossil Greaves(Desktop, Console and Mobile versions)
Fossil HelmetFossil Helmet(Desktop, Console and Mobile versions)
Fossil PickaxeFossil Pickaxe(Desktop, Console and Mobile versions)
Fossil PlateFossil Plate(Desktop, Console and Mobile versions)


  • Sturdy Fossils have no sell value, so crafting them into Bone Throwing Knives is the best way to sell them. Selling Bone Throwing Knives yields 3 SC per Sturdy Fossil used. However, Scarab Bombs sell for more at a profit of 30 CC but if the player is buying Bombs to craft them, it is better to craft the knives instead.
  • Not counting the javelins or the throwing knives, making all of the fossil equipment requires 87 Sturdy Fossils.
  • Placed Sturdy Fossils only blend with Desert Fossil blocks.


  • Desktop 1.4.1: Can now be obtained from Tomb Crawlers, Oasis Crates, and Mirage Crates.