WBEZ Chicago muses about “what prehistory creatures roamed Chicago”…  No dinosaur, at least not non-avian dinosaurs, but many other wondrous plants and animals!

A group of third and fourth graders from Urban Prairie Waldorf School in the city’s Pilsen neighborhood asked Curious City if dinosaurs ever walked in Chicago.

The unsatisfying answer: we don’t know for sure. Dinosaur fossils are almost exclusively found in sedimentary rock. But rocks from the Mesozoic Era, about 252 to 66 million years ago haven’t been discovered in the region. However, several experts we spoke to said Chicago still has a lot of stunning prehistoric discoveries dating back to before dinosaurs walked the Earth. These fossils give scientists an idea of how the region looked when sea creatures ruled the place.