watch 01:51 The Loop (Games) Do you like this video? Amphibian Fossil is an artifact. Source With a fishing skill of 2 or higher, Amphibian Fossils can be obtained from fishing treasure chests. Uses An Amphibian Fossil can be donated to the museum. Retrieved from "https://stardewvalley.fandom.com/wiki/Amphibian_Fossil?oldid=34775" Categories: Items Artifacts Community content is available under CC-BY-SA unless otherwise noted.