Bygone Arthropods
A UP2 addon adding a variety of real and fictional extinct arthropods. Free Minecraft Java mod for 1.20.1.
⬇ Download on CurseForgeThe author built this one for Minecraft 1.20.1 on Forge. On other versions it may install and then do nothing.
Bygone Arthropods is an addon to Unusual Prehistory 2, adding in 6 new mobs, generally all being from the Mesozoic era. Just a warning to any that download this mod, the Websteroprion (Worm) IS EXTREMELY BUGGY!
This mod is open source, as it is not going to get any updates past this version! Feel free to do whatever you want with it.
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Follow Min and his other projects, he is the amazing coder who helped make this addon a reality!
- Ships as bygonearthropods-1.0.0.jar — drop this file into the mods folder
- Download size: 200 KB
- Download link checked 23 Aug 2026 — working
These come from our own check of the pack file, not from the source page.