You can find all sorts of things buried on the planets in the game world of Spectrobes. Fossils and minerals are buried in all sorts of places. Pay particular attention to the bottom of cliffs and in the area around rocks and boulders. You will often find things buried there. The buried fossils and minerals change every time you play the game, so you won't necessarily find the same thing if you look in the same place during another game. As you proceed through the story, some planets will refresh with a totally different set of buried objects.