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Feur Extension Fossil is an immersive mod that adds massive fossil structures scattered throughout the Minecraft world. Discover the remains of ancient T-Rex, mythical dragons, giant fish, and much more. Each structure tells the story of a forgotten world, once inhabited by now-extinct creatures. But beware: Monstercamps sometimes appear near these sites, as if something dark still watches over these ancient ruins…

Feur Extension Fossil adds additional content, so there is no generation conflict with other mods of structures.
You can also enjoy the FEUR Collection here :

 

Add new structures :

• 3 new fossil types
• 3 giant shapes that will not leave you indifferent
• Camps of monsters that have settled in giant skull

maybe other things...