This page or section contains unmarked spoilers from update 1.6 of Stardew Valley. Players may want to avoid or be cautious toward reading this article/section.
You may donate fossil or mummy artifacts to the office so that the skeletal or bodily remains can reconstruct the forms of four different creatures. In some cases, multiple fossils of the same kind are required.
Items can be found throughout Ginger Island, in Artifact Spots, by fishing, breaking bone nodes, killing monsters, or panning.