Explore / North America / Illinois
Illinois
Thornton Quarry
Fossil site Documented sitePermission required
What you could find
Reported finds from this ground.
FossilsAlso reported: reef corals, brachiopods.
Photos via Wikimedia Commons: Partonez (CC BY-SA 4.0).
Why this spot
Giant Silurian reef quarry south of Chicago
Famous reef complex with long-running society field trips.
Before you go
Hazards noted for this site.
quarry highwalls, machinery
Keep exploring nearby
More spots in this area.