Have you ever wondered why fossils are so rare? Turns out, they only generate rarely in desert, swamp, and mangrove swamp biomes. Most players won't ever encounter one throughout their playthroughs.
This datapack uses Fabric/Forge biome modifiers to allow fossils to generate in any Overworld biome. They aren't too common, but exploring big cave systems will give you a good shot at finding some.
Since this is done on top of vanilla fossil generation, fossils will be around ~70% more common in deserts, swamps, and mangrove swamps compared to other biomes. Similarly, fossils are about 160% more common in the deep dark compared to other biomes.
Configuration: If you want to edit the generation frequency of these fossils, make a datapack with the data/more_fossils/worldgen/placed_feature folder from the source repository and edit the corresponding json file. The minecraft:rarity_filter entry controls the rarity of a feature's generation, where a value of 30 corresponds to a 1 in 30 chance of passing through the filter (and a 29 in 30 chance of generation failing).
You can also go to data/more_fossils/tags/worldgen/biome to edit the tags that determine which biomes a fossil can spawn in.
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Terms for using, modifying and redistributing this product.
16.05.2026 · Modrinth
Update to 26.1.2
(Pull request by SwordfishBE on GitHub)
Screenshots and images from the original Modrinth page.


Published versions and original Modrinth files.
16.05.2026 · 1 605 downloads
Update to 26.1.2
(Pull request by SwordfishBE on GitHub)
18.03.2026 · 1 994 downloads
Fix pack.mcmeta
02.08.2025 · 23 957 downloads
Fixes neoforge crash
17.04.2025 · 12 038 downloads
For the sake of not having to update the mod in the future (and my sanity), I've switched this mod to rely on Lithostitched to implement the biome/worldgen modifier for both Fabric and NeoForge; as a result, this mod is supported for any version of Minecraft that Lithostitched is available.
24.04.2024 · 76 918 downloads
Update metadata to datapack version 41
30.06.2023 · 180 039 downloads
Updates the mod to use Fabric biome modifiers, allowing it to work on Fabric, Forge, and Quilt.
On Forge, the 1.0.1 Forge datapack has identical behavior, so you can use either. On Fabric or Quilt, a datapack version is not possible to make.
10.06.2023 · 293 downloads
This Fabric version instead adds fossils only to the Deep Dark.
Due to Fabric's lack of data-driven biome modifiers, this was done by editing the fossils into the biome files directly.
10.06.2023 · 1 349 downloads
This Fabric version instead adds fossils only to the Deep Dark.
Due to Fabric's lack of data-driven biome modifiers, this was done by editing the fossils into the biome files directly.
10.06.2023 · 242 downloads
Fixes fossil generation to occur at the appropriate worldgen step.
10.06.2023 · 1 320 downloads
Fixes fossil generation to occur at the appropriate worldgen step.
09.05.2023 · 183 downloads
Added pack.png.
25.04.2023 · 150 downloads
Added pack.png.