BOTMPACK.zip is a release file of the Minecraft resource pack fossils of the mesozoic, made for Minecraft 1.20.1, 1.18.2. It was published on October 5, 2026 and is 1.4 MB in size. For the full description, screenshots and every other version, visit the fossils of the mesozoic resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.