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  1. Fossils From Rocks Near Chicago

    Unearth the life forms that lived in Chicago millions of years ago. Limestone forms the underlayer of the earth around Chicago, and contains an amazing array of fossils like corals, crinoids and trilobites, among others. Learn More
  2. Fossil Plants of Illinois

    These fossils are from Mazon Creek region in Northeastern Illinois. They are from the Pennsylvanian Period of over 300 million years ago. Marvel in the beauty of these plant shapes and forms, incredibly preserved in ironstone concretions. Learn More
  3. Common Metal Ores of Illinois

    Unearth the valuable metals we know as ores. Usually found concentrated in deposits, these examples illustrate some of the common ores found in Illinois. Learn More
  4. Ice Age Mammals

    This box contains models of mammals (and their teeth!) that could be found in the Chicago region 12,000 years ago. Look at the animals' physical characteristics and infer their evolutionary advantages. Discuss some of the physical changes that happened as Amebelodons evolved into mammoths and modern elephants. Debate what caused these changes and identify relationships among these animals based on their teeth. Learn More
  5. 300 Million Years Ago in Illinois

    The fossils from Mazon Creek, a Lagerst├Ątte near Chicago, continue to teach scientists much about the ecosystems of the Illinois area 300 million years ago. Examine the fossil evidence provided in this box to connect organisms in an ancient food web. Compare your food web with a modern ecosystem's food web. Were the trophic levels different hundreds of millions of years ago? Learn about the two biotas that existed during this time in Illinois: the Essex and the Braidwood. Then, based on the adaptations observed in the fossils, sort the fossils according to the biotas in which they probably lived. Learn More
  6. A T-Rex Named Sue

    Meet Sue, the world's largest and most complete Tyrannosaurus rex, and one of The Field Museum's most famous residents! This box contains a Sue hand puppet, a replica of one of Sue's teeth, and casts of a T. rex's claw and skull. Learn More

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