The authors describe how and where fossils form, when they lived (the Paleozoic covers the period of time from about 570 to 245 million years ago), what fossils tell us about ancient environments, how to collect fossils, and general localities where you might find fossils. But the heart of the booklet lies in its drawings. These illustrations will aid collectors in identifying the fossils that they have discovered in their travels in Wisconsin—or perhaps inspire a trip to a nearby quarry or roadcut (after obtaining permission from a landowner, of course) to begin a collection (25 pages; 2002).