Have you ever gone fossil hunting only to think what you’ve found may be a rock? Take a closer look – many fossils you can find in Cincinnati are stuck together on limestone rocks.

You can also find fossils aplenty at Sharon Woods. If you take a walk along the Gorge Trail, you’ll see alternating layers of shale and limestone rock. These rocks are filled with fossils from the Ordovician Period, a geologic period about 450 million years ago when a sea covered all of Ohio.

Use the guide below to see what fossils you can find on your next park visit.

Want more nature education fun that you can do at home? Click here for all of our backyard challenges.