Bring your own objects and collections in for identification by experts. Experts join us from the fields of paleontology, anthropology, archaeology, botany, zoology, and geology. Please bring your: Shells; Rocks and minerals; Invertebrate fossils; Arrow heads; Shards of pottery; Vertebrate bones; Insects; Skulls; Seeds, leaves, twigs; Fish. Sorry, no appraisals will be given. This year's ID Day will be part of the “Behind the Scenes Days” activities offered as part of the 2009-2010 LSA Theme Year, “Meaningful Objects: Museums in the Academy.” Visit www.lsa.umich.edu/museumtheme for details.