Paul Mayer, Fossil Invertebrate Collections Manager from the Field Museum, will present a talk on the 430 million year old Silurian reefs of Northeastern Illinois, including common fossils found in the Chicago area: corals, brachiopods, crinoids, trilobites, and cephalopods. Today we see the remnants of this in the numerous limestone quarries in our landscape.
2:00 p.m. - 60 minutes - Youth to Adult $5.00 per person, Museum Members Free Reservations Recommended (630) 833-1616