Slime fossils are an uncommon resource obtained with a drill.
Prized for the ancient minerals they contain, slime fossils are like nature capturing a moment in time. Specifically, that moment seems to be when a great avalanche or mudslide occured and a slime was totally cool with it.
Treasure Pods that contain Slime Fossils
Crates that contain Slime Fossils
Only crates dropped by Gordo Slimes caught on a Gordo Snare, or from those dropped by the Crystal, Hunter, Dervish, Tangle and Mosaic Gordos found in the wild, can contain Slime Fossils. The chance you get a Slime Fossil from these crates is the same as its rarity.
Recipes that use Slime Fossils